1138026590 has 16 divisors (see below), whose sum is σ = 2068731360. Its totient is φ = 450703200.

The previous prime is 1138026587. The next prime is 1138026611. The reversal of 1138026590 is 956208311.

It is a self number, because there is not a number n which added to its sum of digits gives 1138026590.

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, 562370 + ... + 564389.

It is an arithmetic number, because the mean of its divisors is an integer number (129295710).

Almost surely, 2^1138026590 is an apocalyptic number.

1138026590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138026590 is a deficient number, since it is larger than the sum of its proper divisors (930704770).

1138026590 is a wasteful number, since it uses less digits than its factorization.

1138026590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126867.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1138026590 is about 33734.6496943425. The cubic root of 1138026590 is about 1044.0407977431.

The spelling of 1138026590 in words is "one billion, one hundred thirty-eight million, twenty-six thousand, five hundred ninety".