1293214861 has 8 divisors (see below), whose sum is σ = 1328635800. Its totient is φ = 1257818688.

The previous prime is 1293214849. The next prime is 1293214873. The reversal of 1293214861 is 1684123921.

It is an interprime number because it is at equal distance from previous prime (1293214849) and next prime (1293214873).

It can be written as a sum of positive squares in 4 ways, for example, as 411481225 + 881733636 = 20285^2 + 29694^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1293214861 - 2⁵ = 1293214829 is a prime.

It is a super-2 number, since 2×1293214861² = 3344809353422498642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1293214861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1293214831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158715 + ... + 166663.

It is an arithmetic number, because the mean of its divisors is an integer number (166079475).

Almost surely, 2^1293214861 is an apocalyptic number.

It is an amenable number.

1293214861 is a deficient number, since it is larger than the sum of its proper divisors (35420939).

1293214861 is an equidigital number, since it uses as much as digits as its factorization.

1293214861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12383.

The product of its digits is 20736, while the sum is 37.

The square root of 1293214861 is about 35961.2967091010. The cubic root of 1293214861 is about 1089.4907873156.

The spelling of 1293214861 in words is "one billion, two hundred ninety-three million, two hundred fourteen thousand, eight hundred sixty-one".