1902742379 has 2 divisors, whose sum is σ = 1902742380. Its totient is φ = 1902742378.

The previous prime is 1902742343. The next prime is 1902742399. The reversal of 1902742379 is 9732472091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1902742379 - 2⁸ = 1902742123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1902742339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 951371189 + 951371190.

It is an arithmetic number, because the mean of its divisors is an integer number (951371190).

Almost surely, 2^1902742379 is an apocalyptic number.

1902742379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1902742379 is an equidigital number, since it uses as much as digits as its factorization.

1902742379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 1902742379 is about 43620.4353371215. The cubic root of 1902742379 is about 1239.1579391844.

The spelling of 1902742379 in words is "one billion, nine hundred two million, seven hundred forty-two thousand, three hundred seventy-nine".