1058438644 has 12 divisors (see below), whose sum is σ = 1853052768. Its totient is φ = 528995000.

The previous prime is 1058438639. The next prime is 1058438653. The reversal of 1058438644 is 4468348501.

It is a super-2 number, since 2×1058438644² = 2240584726225117472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1058438644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45232 + ... + 64519.

It is an arithmetic number, because the mean of its divisors is an integer number (154421064).

Almost surely, 2^1058438644 is an apocalyptic number.

It is an amenable number.

1058438644 is a deficient number, since it is larger than the sum of its proper divisors (794614124).

1058438644 is a wasteful number, since it uses less digits than its factorization.

1058438644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112166 (or 112164 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 43.

The square root of 1058438644 is about 32533.6540216435. The cubic root of 1058438644 is about 1019.1119542185. Note that the first 3 decimals are identical.

The spelling of 1058438644 in words is "one billion, fifty-eight million, four hundred thirty-eight thousand, six hundred forty-four".