981349507 has 8 divisors (see below), whose sum is σ = 985989312. Its totient is φ = 976718400.

The previous prime is 981349493. The next prime is 981349513. The reversal of 981349507 is 705943189.

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 981349507 - 2²³ = 972960899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981349207) 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, 344493 + ... + 347329.

It is an arithmetic number, because the mean of its divisors is an integer number (123248664).

Almost surely, 2^981349507 is an apocalyptic number.

981349507 is a deficient number, since it is larger than the sum of its proper divisors (4639805).

981349507 is a wasteful number, since it uses less digits than its factorization.

981349507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 981349507 is about 31326.4984797216. The cubic root of 981349507 is about 993.7441145070.

The spelling of 981349507 in words is "nine hundred eighty-one million, three hundred forty-nine thousand, five hundred seven".