1013239187 has 8 divisors (see below), whose sum is σ = 1020948000. Its totient is φ = 1005542784.

The previous prime is 1013239169. The next prime is 1013239189. The reversal of 1013239187 is 7819323101.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1013239187 - 2⁸ = 1013238931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1013239189) 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, 219578 + ... + 224144.

It is an arithmetic number, because the mean of its divisors is an integer number (127618500).

Almost surely, 2^1013239187 is an apocalyptic number.

1013239187 is a deficient number, since it is larger than the sum of its proper divisors (7708813).

1013239187 is a wasteful number, since it uses less digits than its factorization.

1013239187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6205.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 1013239187 is about 31831.4182373328. The cubic root of 1013239187 is about 1004.3937292036.

The spelling of 1013239187 in words is "one billion, thirteen million, two hundred thirty-nine thousand, one hundred eighty-seven".