1294641641 has 8 divisors (see below), whose sum is σ = 1369438080. Its totient is φ = 1221387552.

The previous prime is 1294641629. The next prime is 1294641659. The reversal of 1294641641 is 1461464921.

It is a happy number.

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 1294641641 - 2¹⁰ = 1294640617 is a prime.

It is a super-2 number, since 2×1294641641² = 3352193957222345762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1294641595 and 1294641604.

It is not an unprimeable number, because it can be changed into a prime (1294641611) 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, 383861 + ... + 387218.

It is an arithmetic number, because the mean of its divisors is an integer number (171179760).

Almost surely, 2^1294641641 is an apocalyptic number.

It is an amenable number.

1294641641 is a deficient number, since it is larger than the sum of its proper divisors (74796439).

1294641641 is an equidigital number, since it uses as much as digits as its factorization.

1294641641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771175.

The product of its digits is 41472, while the sum is 38.

The square root of 1294641641 is about 35981.1289567184. The cubic root of 1294641641 is about 1089.8913117224.

The spelling of 1294641641 in words is "one billion, two hundred ninety-four million, six hundred forty-one thousand, six hundred forty-one".