361479981 has 8 divisors (see below), whose sum is σ = 491067360. Its totient is φ = 236439632.

The previous prime is 361479977. The next prime is 361479991. The reversal of 361479981 is 189974163.

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 361479981 - 2² = 361479977 is a prime.

It is a super-2 number, since 2×361479981² = 261335553327520722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 361479981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361479901) 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, 1136571 + ... + 1136888.

It is an arithmetic number, because the mean of its divisors is an integer number (61383420).

Almost surely, 2^361479981 is an apocalyptic number.

It is an amenable number.

361479981 is a deficient number, since it is larger than the sum of its proper divisors (129587379).

361479981 is a wasteful number, since it uses less digits than its factorization.

361479981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273515.

The product of its digits is 326592, while the sum is 48.

The square root of 361479981 is about 19012.6268832058. The cubic root of 361479981 is about 712.3521677904.

The spelling of 361479981 in words is "three hundred sixty-one million, four hundred seventy-nine thousand, nine hundred eighty-one".