17972757490 has 8 divisors (see below), whose sum is σ = 32350963500. Its totient is φ = 7189102992.

The previous prime is 17972757469. The next prime is 17972757547. The reversal of 17972757490 is 9475727971.

It is a happy number.

17972757490 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 17972351721 + 405769 = 134061^2 + 637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×17972757490² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 898637865 + ... + 898637884.

Almost surely, 2^17972757490 is an apocalyptic number.

17972757490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

17972757490 is a deficient number, since it is larger than the sum of its proper divisors (14378206010).

17972757490 is a wasteful number, since it uses less digits than its factorization.

17972757490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797275756.

The product of its (nonzero) digits is 7779240, while the sum is 58.

The spelling of 17972757490 in words is "seventeen billion, nine hundred seventy-two million, seven hundred fifty-seven thousand, four hundred ninety".