1616958738 has 24 divisors (see below), whose sum is σ = 3588861276. Its totient is φ = 525840000.

The previous prime is 1616958737. The next prime is 1616958769. The reversal of 1616958738 is 8378596161.

1616958738 is a `hidden beast` number, since 16 + 16 + 9 + 587 + 38 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1615798809 + 1159929 = 40197^2 + 1077^2 .

It is a super-2 number, since 2×1616958738² = 5229111120789105288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1616958737) 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 11 ways as a sum of consecutive naturals, for example, 1094763 + ... + 1096238.

Almost surely, 2^1616958738 is an apocalyptic number.

1616958738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1616958738 is an abundant number, since it is smaller than the sum of its proper divisors (1971902538).

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

1616958738 is a wasteful number, since it uses less digits than its factorization.

1616958738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191050 (or 2191047 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 1616958738 is about 40211.4254659046. The cubic root of 1616958738 is about 1173.7248851578.

The spelling of 1616958738 in words is "one billion, six hundred sixteen million, nine hundred fifty-eight thousand, seven hundred thirty-eight".