1612314621 has 12 divisors (see below), whose sum is σ = 2329383420. Its totient is φ = 1074652800.

The previous prime is 1612314617. The next prime is 1612314631. The reversal of 1612314621 is 1264132161.

It is a happy number.

1612314621 is a `hidden beast` number, since 1 + 6 + 1 + 2 + 31 + 4 + 621 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 990360900 + 621953721 = 31470^2 + 24939^2 .

It is not a de Polignac number, because 1612314621 - 2² = 1612314617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1612314601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35221 + ... + 66821.

It is an arithmetic number, because the mean of its divisors is an integer number (194115285).

Almost surely, 2^1612314621 is an apocalyptic number.

It is an amenable number.

1612314621 is a deficient number, since it is larger than the sum of its proper divisors (717068799).

1612314621 is a wasteful number, since it uses less digits than its factorization.

1612314621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37276 (or 37273 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1612314621 is about 40153.6377056924. The cubic root of 1612314621 is about 1172.6001105035.

Adding to 1612314621 its reverse (1264132161), we get a palindrome (2876446782).

The spelling of 1612314621 in words is "one billion, six hundred twelve million, three hundred fourteen thousand, six hundred twenty-one".