1616969040 has 40 divisors (see below), whose sum is σ = 5012604768. Its totient is φ = 431191680.

The previous prime is 1616968993. The next prime is 1616969047. The reversal of 1616969040 is 409696161.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1616969040² = 5229177752637043200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1616968983 and 1616969001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616969047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3368446 + ... + 3368925.

Almost surely, 2^1616969040 is an apocalyptic number.

1616969040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1616969040 is an abundant number, since it is smaller than the sum of its proper divisors (3395635728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1616969040 is a wasteful number, since it uses less digits than its factorization.

1616969040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6737387 (or 6737381 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 1616969040 is about 40211.5535636215. The cubic root of 1616969040 is about 1173.7273778390.

The spelling of 1616969040 in words is "one billion, six hundred sixteen million, nine hundred sixty-nine thousand, forty".