140187915 has 96 divisors (see below), whose sum is σ = 294368256. Its totient is φ = 62674560.

The previous prime is 140187911. The next prime is 140187937. The reversal of 140187915 is 519781041.

It is not a de Polignac number, because 140187915 - 2² = 140187911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140187915.

It is not an unprimeable number, because it can be changed into a prime (140187911) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 450610 + ... + 450920.

It is an arithmetic number, because the mean of its divisors is an integer number (3066336).

Almost surely, 2^140187915 is an apocalyptic number.

140187915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

140187915 is an abundant number, since it is smaller than the sum of its proper divisors (154180341).

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

140187915 is an equidigital number, since it uses as much as digits as its factorization.

140187915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 140187915 is about 11840.0977614207. The cubic root of 140187915 is about 519.4816271586.

The spelling of 140187915 in words is "one hundred forty million, one hundred eighty-seven thousand, nine hundred fifteen".