16938461554 has 16 divisors (see below), whose sum is σ = 29040254208. Its totient is φ = 7258617792.

The previous prime is 16938461539. The next prime is 16938461587. The reversal of 16938461554 is 45516483961.

It is a happy number.

It is a super-2 number, since 2×16938461554² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 100087 + ... + 209509.

It is an arithmetic number, because the mean of its divisors is an integer number (1815015888).

Almost surely, 2^16938461554 is an apocalyptic number.

16938461554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16938461554 is a deficient number, since it is larger than the sum of its proper divisors (12101792654).

16938461554 is a wasteful number, since it uses less digits than its factorization.

16938461554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120489.

The product of its digits is 3110400, while the sum is 52.

The spelling of 16938461554 in words is "sixteen billion, nine hundred thirty-eight million, four hundred sixty-one thousand, five hundred fifty-four".