15140191 has 8 divisors (see below), whose sum is σ = 16763904. Its totient is φ = 13557720.

The previous prime is 15140137. The next prime is 15140201. The reversal of 15140191 is 19104151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15140191 - 2⁹ = 15139679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15140101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9535 + ... + 11008.

It is an arithmetic number, because the mean of its divisors is an integer number (2095488).

Almost surely, 2^15140191 is an apocalyptic number.

15140191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15140191 is a deficient number, since it is larger than the sum of its proper divisors (1623713).

15140191 is a wasteful number, since it uses less digits than its factorization.

15140191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20621.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 15140191 is about 3891.0398353139. The cubic root of 15140191 is about 247.3871389655.

The spelling of 15140191 in words is "fifteen million, one hundred forty thousand, one hundred ninety-one".