1616920590 has 16 divisors (see below), whose sum is σ = 3880609488. Its totient is φ = 431178816.

The previous prime is 1616920589. The next prime is 1616920597. The reversal of 1616920590 is 950296161.

It is a super-2 number, since 2×1616920590² = 5228864388731896200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616920597) 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, 26948647 + ... + 26948706.

It is an arithmetic number, because the mean of its divisors is an integer number (242538093).

Almost surely, 2^1616920590 is an apocalyptic number.

1616920590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1616920590 is an abundant number, since it is smaller than the sum of its proper divisors (2263688898).

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

1616920590 is a wasteful number, since it uses less digits than its factorization.

1616920590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53897363.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 1616920590 is about 40210.9511203105. The cubic root of 1616920590 is about 1173.7156547410.

The spelling of 1616920590 in words is "one billion, six hundred sixteen million, nine hundred twenty thousand, five hundred ninety".