1890732379 has 2 divisors, whose sum is σ = 1890732380. Its totient is φ = 1890732378.

The previous prime is 1890732373. The next prime is 1890732391. The reversal of 1890732379 is 9732370981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1890732379 - 2²⁵ = 1857177947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1890732373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945366189 + 945366190.

It is an arithmetic number, because the mean of its divisors is an integer number (945366190).

Almost surely, 2^1890732379 is an apocalyptic number.

1890732379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1890732379 is an equidigital number, since it uses as much as digits as its factorization.

1890732379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 1890732379 is about 43482.5525814665. The cubic root of 1890732379 is about 1236.5452699965.

The spelling of 1890732379 in words is "one billion, eight hundred ninety million, seven hundred thirty-two thousand, three hundred seventy-nine".