20181235148 has 12 divisors (see below), whose sum is σ = 35800958760. Its totient is φ = 9952389792.

The previous prime is 20181235133. The next prime is 20181235153. The reversal of 20181235148 is 84153218102.

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, 34556618 + ... + 34557201.

It is an arithmetic number, because the mean of its divisors is an integer number (2983413230).

Almost surely, 2^20181235148 is an apocalyptic number.

It is an amenable number.

20181235148 is a deficient number, since it is larger than the sum of its proper divisors (15619723612).

20181235148 is a wasteful number, since it uses less digits than its factorization.

20181235148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69113896 (or 69113894 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The spelling of 20181235148 in words is "twenty billion, one hundred eighty-one million, two hundred thirty-five thousand, one hundred forty-eight".