15245742018 has 128 divisors (see below), whose sum is σ = 36088416000. Its totient is φ = 4248502272.

The previous prime is 15245742007. The next prime is 15245742079. The reversal of 15245742018 is 81024754251.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17265405 + ... + 17266287.

It is an arithmetic number, because the mean of its divisors is an integer number (281940750).

Almost surely, 2^15245742018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15245742018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18044208000).

15245742018 is an abundant number, since it is smaller than the sum of its proper divisors (20842673982).

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

15245742018 is a wasteful number, since it uses less digits than its factorization.

15245742018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396.

The product of its (nonzero) digits is 89600, while the sum is 39.

The spelling of 15245742018 in words is "fifteen billion, two hundred forty-five million, seven hundred forty-two thousand, eighteen".