17949776910 has 64 divisors (see below), whose sum is σ = 49122303552. Its totient is φ = 4158498816.

The previous prime is 17949776837. The next prime is 17949776941. The reversal of 17949776910 is 1967794971.

It is a super-2 number, since 2×17949776910² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1347049 + ... + 1360308.

It is an arithmetic number, because the mean of its divisors is an integer number (767535993).

Almost surely, 2^17949776910 is an apocalyptic number.

17949776910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

17949776910 is an abundant number, since it is smaller than the sum of its proper divisors (31172526642).

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

17949776910 is a wasteful number, since it uses less digits than its factorization.

17949776910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2707397.

The product of its (nonzero) digits is 6001128, while the sum is 60.

The spelling of 17949776910 in words is "seventeen billion, nine hundred forty-nine million, seven hundred seventy-six thousand, nine hundred ten".