1917423338290 has 32 divisors (see below), whose sum is σ = 3455687142144. Its totient is φ = 766008809280.

The previous prime is 1917423338179. The next prime is 1917423338399. The reversal of 1917423338290 is 928333247191.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26012667 + ... + 26086273.

It is an arithmetic number, because the mean of its divisors is an integer number (107990223192).

Almost surely, 2^{1917423338290} is an apocalyptic number.

1917423338290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1917423338290 is a deficient number, since it is larger than the sum of its proper divisors (1538263803854).

1917423338290 is a wasteful number, since it uses less digits than its factorization.

1917423338290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76842.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 1917423338290 in words is "one trillion, nine hundred seventeen billion, four hundred twenty-three million, three hundred thirty-eight thousand, two hundred ninety".