1005138190 has 64 divisors (see below), whose sum is σ = 2192601600. Its totient is φ = 324072576.

The previous prime is 1005138181. The next prime is 1005138223. The reversal of 1005138190 is 918315001.

It is a super-2 number, since 2×1005138190² = 2020605561992952200, 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 31 ways as a sum of consecutive naturals, for example, 182152 + ... + 187588.

It is an arithmetic number, because the mean of its divisors is an integer number (34259400).

Almost surely, 2^1005138190 is an apocalyptic number.

1005138190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1005138190 is an abundant number, since it is smaller than the sum of its proper divisors (1187463410).

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

1005138190 is a wasteful number, since it uses less digits than its factorization.

1005138190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 1005138190 is about 31703.9144270861. The cubic root of 1005138190 is about 1001.7098049010.

The spelling of 1005138190 in words is "one billion, five million, one hundred thirty-eight thousand, one hundred ninety".