1890379136 has 32 divisors (see below), whose sum is σ = 3867782880. Its totient is φ = 919641600.

The previous prime is 1890379121. The next prime is 1890379159. The reversal of 1890379136 is 6319730981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194840 + ... + 204311.

It is an arithmetic number, because the mean of its divisors is an integer number (120868215).

Almost surely, 2^1890379136 is an apocalyptic number.

1890379136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1890379136 is an abundant number, since it is smaller than the sum of its proper divisors (1977403744).

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

1890379136 is an equidigital number, since it uses as much as digits as its factorization.

1890379136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399202 (or 399190 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 1890379136 is about 43478.4904981762. The cubic root of 1890379136 is about 1236.4682578343.

The spelling of 1890379136 in words is "one billion, eight hundred ninety million, three hundred seventy-nine thousand, one hundred thirty-six".