1054642638 has 32 divisors (see below), whose sum is σ = 2414903040. Its totient is φ = 300790080.

The previous prime is 1054642627. The next prime is 1054642657. The reversal of 1054642638 is 8362464501.

It is a super-2 number, since 2×1054642638² = 2224542187775198088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1054642596 and 1054642605.

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, 1833 + ... + 45963.

It is an arithmetic number, because the mean of its divisors is an integer number (75465720).

Almost surely, 2^1054642638 is an apocalyptic number.

1054642638 is an abundant number, since it is smaller than the sum of its proper divisors (1360260402).

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

1054642638 is a wasteful number, since it uses less digits than its factorization.

1054642638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44712.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 1054642638 is about 32475.2619388974. The cubic root of 1054642638 is about 1017.8921735203.

The spelling of 1054642638 in words is "one billion, fifty-four million, six hundred forty-two thousand, six hundred thirty-eight".