1955627081838 has 48 divisors (see below), whose sum is σ = 4309257250896. Its totient is φ = 640801653120.

The previous prime is 1955627081827. The next prime is 1955627081857. The reversal of 1955627081838 is 8381807265591.

1955627081838 is a `hidden beast` number, since 1 + 9 + 556 + 2 + 70 + 8 + 1 + 8 + 3 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1281945 + ... + 2356827.

It is an arithmetic number, because the mean of its divisors is an integer number (89776192727).

Almost surely, 2^{1955627081838} is an apocalyptic number.

1955627081838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1955627081838 is an abundant number, since it is smaller than the sum of its proper divisors (2353630169058).

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

1955627081838 is a wasteful number, since it uses less digits than its factorization.

1955627081838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076609 (or 1076606 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 63.

The spelling of 1955627081838 in words is "one trillion, nine hundred fifty-five billion, six hundred twenty-seven million, eighty-one thousand, eight hundred thirty-eight".