1013901491 has 8 divisors (see below), whose sum is σ = 1042230864. Its totient is φ = 985620960.

The previous prime is 1013901481. The next prime is 1013901547. The reversal of 1013901491 is 1941093101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1013901491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013901401) 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, 32096 + ... + 55298.

It is an arithmetic number, because the mean of its divisors is an integer number (130278858).

Almost surely, 2^1013901491 is an apocalyptic number.

1013901491 is a deficient number, since it is larger than the sum of its proper divisors (28329373).

1013901491 is a wasteful number, since it uses less digits than its factorization.

1013901491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24421.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 1013901491 is about 31841.8198443493. The cubic root of 1013901491 is about 1004.6125222607.

Adding to 1013901491 its reverse (1941093101), we get a palindrome (2954994592).

The spelling of 1013901491 in words is "one billion, thirteen million, nine hundred one thousand, four hundred ninety-one".