1058987990 has 16 divisors (see below), whose sum is σ = 2006503920. Its totient is φ = 401300640.

The previous prime is 1058987977. The next prime is 1058988001. The reversal of 1058987990 is 997898501.

It is a happy number.

It is a super-2 number, since 2×1058987990² = 2242911125928480200, which 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 7 ways as a sum of consecutive naturals, for example, 2786621 + ... + 2787000.

It is an arithmetic number, because the mean of its divisors is an integer number (125406495).

Almost surely, 2^1058987990 is an apocalyptic number.

1058987990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1058987990 is a deficient number, since it is larger than the sum of its proper divisors (947515930).

1058987990 is a wasteful number, since it uses less digits than its factorization.

1058987990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573647.

The product of its (nonzero) digits is 1632960, while the sum is 56.

The square root of 1058987990 is about 32542.0956608513. The cubic root of 1058987990 is about 1019.2882353381.

The spelling of 1058987990 in words is "one billion, fifty-eight million, nine hundred eighty-seven thousand, nine hundred ninety".