361916921 has 8 divisors (see below), whose sum is σ = 383073600. Its totient is φ = 340971120.

The previous prime is 361916911. The next prime is 361916953. The reversal of 361916921 is 129619163.

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 361916921 - 2¹⁴ = 361900537 is a prime.

It is a super-2 number, since 2×361916921² = 261967715412240482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (361916911) 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, 49181 + ... + 56058.

It is an arithmetic number, because the mean of its divisors is an integer number (47884200).

Almost surely, 2^361916921 is an apocalyptic number.

It is an amenable number.

361916921 is a deficient number, since it is larger than the sum of its proper divisors (21156679).

361916921 is a wasteful number, since it uses less digits than its factorization.

361916921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105439.

The product of its digits is 17496, while the sum is 38.

The square root of 361916921 is about 19024.1141975126. The cubic root of 361916921 is about 712.6390714886.

The spelling of 361916921 in words is "three hundred sixty-one million, nine hundred sixteen thousand, nine hundred twenty-one".