1542879870 has 32 divisors (see below), whose sum is σ = 4231899648. Its totient is φ = 352658208.

The previous prime is 1542879851. The next prime is 1542879887. The reversal of 1542879870 is 789782451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3673314 + ... + 3673733.

It is an arithmetic number, because the mean of its divisors is an integer number (132246864).

Almost surely, 2^1542879870 is an apocalyptic number.

1542879870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1542879870 is an abundant number, since it is smaller than the sum of its proper divisors (2689019778).

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

1542879870 is a wasteful number, since it uses less digits than its factorization.

1542879870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7347064.

The product of its (nonzero) digits is 1128960, while the sum is 51.

The square root of 1542879870 is about 39279.5095437812. The cubic root of 1542879870 is about 1155.5197450927.

The spelling of 1542879870 in words is "one billion, five hundred forty-two million, eight hundred seventy-nine thousand, eight hundred seventy".