1612989797 has 8 divisors (see below), whose sum is σ = 1629071136. Its totient is φ = 1596927312.

The previous prime is 1612989787. The next prime is 1612989853. The reversal of 1612989797 is 7979892161.

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 1612989797 - 2¹² = 1612985701 is a prime.

It is a super-2 number, since 2×1612989797² = 5203472170452202418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1612989787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219263 + ... + 226499.

It is an arithmetic number, because the mean of its divisors is an integer number (203633892).

Almost surely, 2^1612989797 is an apocalyptic number.

It is an amenable number.

1612989797 is a deficient number, since it is larger than the sum of its proper divisors (16081339).

1612989797 is a wasteful number, since it uses less digits than its factorization.

1612989797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9427.

The product of its digits is 3429216, while the sum is 59.

The square root of 1612989797 is about 40162.0442333306. The cubic root of 1612989797 is about 1172.7637677606.

The spelling of 1612989797 in words is "one billion, six hundred twelve million, nine hundred eighty-nine thousand, seven hundred ninety-seven".