1990508375 has 16 divisors (see below), whose sum is σ = 2490473856. Its totient is φ = 1588356000.

The previous prime is 1990508371. The next prime is 1990508383. The reversal of 1990508375 is 5738050991.

It is not a de Polignac number, because 1990508375 - 2² = 1990508371 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990508371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29570 + ... + 69680.

It is an arithmetic number, because the mean of its divisors is an integer number (155654616).

Almost surely, 2^1990508375 is an apocalyptic number.

1990508375 is a deficient number, since it is larger than the sum of its proper divisors (499965481).

1990508375 is an equidigital number, since it uses as much as digits as its factorization.

1990508375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40523 (or 40513 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 47.

The square root of 1990508375 is about 44615.1137508356. The cubic root of 1990508375 is about 1257.9247722141.

The spelling of 1990508375 in words is "one billion, nine hundred ninety million, five hundred eight thousand, three hundred seventy-five".