1881791054 has 32 divisors (see below), whose sum is σ = 3319958880. Its totient is φ = 788659200.

The previous prime is 1881791039. The next prime is 1881791077. The reversal of 1881791054 is 4501971881.

It is a happy number.

It is a super-2 number, since 2×1881791054² = 7082275141828861832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1881790996 and 1881791014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285314 + ... + 291834.

It is an arithmetic number, because the mean of its divisors is an integer number (103748715).

Almost surely, 2^1881791054 is an apocalyptic number.

1881791054 is a deficient number, since it is larger than the sum of its proper divisors (1438167826).

1881791054 is a wasteful number, since it uses less digits than its factorization.

1881791054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7556.

The product of its (nonzero) digits is 80640, while the sum is 44.

The square root of 1881791054 is about 43379.6156506717. The cubic root of 1881791054 is about 1234.5929704904.

The spelling of 1881791054 in words is "one billion, eight hundred eighty-one million, seven hundred ninety-one thousand, fifty-four".