15249849890 has 16 divisors (see below), whose sum is σ = 29945160000. Its totient is φ = 5545399920.

The previous prime is 15249849883. The next prime is 15249849907. The reversal of 15249849890 is 9894894251.

It is a Curzon number.

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, 69317390 + ... + 69317609.

It is an arithmetic number, because the mean of its divisors is an integer number (1871572500).

Almost surely, 2^15249849890 is an apocalyptic number.

15249849890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15249849890 is a deficient number, since it is larger than the sum of its proper divisors (14695310110).

15249849890 is a wasteful number, since it uses less digits than its factorization.

15249849890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138635017.

The product of its (nonzero) digits is 7464960, while the sum is 59.

The spelling of 15249849890 in words is "fifteen billion, two hundred forty-nine million, eight hundred forty-nine thousand, eight hundred ninety".