1900007138 has 32 divisors (see below), whose sum is σ = 3034305792. Its totient is φ = 890366400.

The previous prime is 1900007129. The next prime is 1900007147. The reversal of 1900007138 is 8317000091.

It is an interprime number because it is at equal distance from previous prime (1900007129) and next prime (1900007147).

It is a super-2 number, since 2×1900007138² = 7220054248901902088, 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 1900007138.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 821003 + ... + 823313.

It is an arithmetic number, because the mean of its divisors is an integer number (94822056).

Almost surely, 2^1900007138 is an apocalyptic number.

1900007138 is a deficient number, since it is larger than the sum of its proper divisors (1134298654).

1900007138 is a wasteful number, since it uses less digits than its factorization.

1900007138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1900007138 is about 43589.0713138053. The cubic root of 1900007138 is about 1238.5638806559.

The spelling of 1900007138 in words is "one billion, nine hundred million, seven thousand, one hundred thirty-eight".