1838372730 has 32 divisors (see below), whose sum is σ = 4424143104. Its totient is φ = 488894016.

The previous prime is 1838372729. The next prime is 1838372749. The reversal of 1838372730 is 372738381.

It is a super-2 number, since 2×1838372730² = 6759228588815305800, which contains 22 as substring.

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, 72477 + ... + 94496.

It is an arithmetic number, because the mean of its divisors is an integer number (138254472).

Almost surely, 2^1838372730 is an apocalyptic number.

1838372730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1838372730 is an abundant number, since it is smaller than the sum of its proper divisors (2585770374).

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

1838372730 is a wasteful number, since it uses less digits than its factorization.

1838372730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167350.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 1838372730 is about 42876.2490197079. The cubic root of 1838372730 is about 1225.0237907361.

The spelling of 1838372730 in words is "one billion, eight hundred thirty-eight million, three hundred seventy-two thousand, seven hundred thirty".