1369632981 has 8 divisors (see below), whose sum is σ = 1827952704. Its totient is φ = 912200960.

The previous prime is 1369632941. The next prime is 1369632983. The reversal of 1369632981 is 1892369631.

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 1369632981 - 2¹⁹ = 1369108693 is a prime.

It is a super-2 number, since 2×1369632981² = 3751789005285892722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1369632981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369632983) 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, 218316 + ... + 224501.

It is an arithmetic number, because the mean of its divisors is an integer number (228494088).

Almost surely, 2^1369632981 is an apocalyptic number.

It is an amenable number.

1369632981 is a deficient number, since it is larger than the sum of its proper divisors (458319723).

1369632981 is a wasteful number, since it uses less digits than its factorization.

1369632981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443851.

The product of its digits is 419904, while the sum is 48.

The square root of 1369632981 is about 37008.5528087765. The cubic root of 1369632981 is about 1110.5413534993.

The spelling of 1369632981 in words is "one billion, three hundred sixty-nine million, six hundred thirty-two thousand, nine hundred eighty-one".