18148917402 has 256 divisors, whose sum is σ = 53299814400. Its totient is φ = 4439232000.

The previous prime is 18148917383. The next prime is 18148917461. The reversal of 18148917402 is 20471984181.

18148917402 is a `hidden beast` number, since 18 + 148 + 91 + 7 + 402 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4942027 + ... + 4945697.

It is an arithmetic number, because the mean of its divisors is an integer number (208202400).

Almost surely, 2^18148917402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18148917402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26649907200).

18148917402 is an abundant number, since it is smaller than the sum of its proper divisors (35150896998).

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

18148917402 is a wasteful number, since it uses less digits than its factorization.

18148917402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770 (or 3764 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

It can be divided in two parts, 181489 and 17402, that added together give a palindrome (198891).

The spelling of 18148917402 in words is "eighteen billion, one hundred forty-eight million, nine hundred seventeen thousand, four hundred two".