11954901898 has 8 divisors (see below), whose sum is σ = 17932856580. Its totient is φ = 5977283040.

The previous prime is 11954901887. The next prime is 11954901943. The reversal of 11954901898 is 89810945911.

It can be written as a sum of positive squares in 2 ways, for example, as 11679773329 + 275128569 = 108073^2 + 16587^2 .

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

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, 44118 + ... + 160798.

Almost surely, 2^11954901898 is an apocalyptic number.

11954901898 is a deficient number, since it is larger than the sum of its proper divisors (5977954682).

11954901898 is a wasteful number, since it uses less digits than its factorization.

11954901898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167912.

The product of its (nonzero) digits is 933120, while the sum is 55.

The spelling of 11954901898 in words is "eleven billion, nine hundred fifty-four million, nine hundred one thousand, eight hundred ninety-eight".