17958241940 has 24 divisors (see below), whose sum is σ = 37767552480. Its totient is φ = 7172774048.

The previous prime is 17958241933. The next prime is 17958241943. The reversal of 17958241940 is 4914285971.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17958241943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643670 + ... + 670989.

It is an arithmetic number, because the mean of its divisors is an integer number (1573648020).

Almost surely, 2^17958241940 is an apocalyptic number.

17958241940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17958241940 is an abundant number, since it is smaller than the sum of its proper divisors (19809310540).

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

17958241940 is a wasteful number, since it uses less digits than its factorization.

17958241940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315351 (or 1315349 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 17958241940 in words is "seventeen billion, nine hundred fifty-eight million, two hundred forty-one thousand, nine hundred forty".