190511947948 has 24 divisors (see below), whose sum is σ = 393314991104. Its totient is φ = 79014171600.

The previous prime is 190511947909. The next prime is 190511948023. The reversal of 190511947948 is 849749115091.

It is a super-2 number, since 2×190511947948² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 190511947892 and 190511947901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109741038 + ... + 109742773.

Almost surely, 2^190511947948 is an apocalyptic number.

It is an amenable number.

190511947948 is an abundant number, since it is smaller than the sum of its proper divisors (202803043156).

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

190511947948 is a wasteful number, since it uses less digits than its factorization.

190511947948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219483853 (or 219483851 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 58.

The spelling of 190511947948 in words is "one hundred ninety billion, five hundred eleven million, nine hundred forty-seven thousand, nine hundred forty-eight".