361920481 has 4 divisors (see below), whose sum is σ = 389760532. Its totient is φ = 334080432.

The previous prime is 361920469. The next prime is 361920499. The reversal of 361920481 is 184029163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184029163 = 6793 ⋅27091.

It can be written as a sum of positive squares in 2 ways, for example, as 93779856 + 268140625 = 9684^2 + 16375^2 .

It is a cyclic number.

It is not a de Polignac number, because 361920481 - 2²⁷ = 227702753 is a prime.

It is a super-2 number, since 2×361920481² = 261972869134542722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361920451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13920006 + ... + 13920031.

It is an arithmetic number, because the mean of its divisors is an integer number (97440133).

Almost surely, 2^361920481 is an apocalyptic number.

It is an amenable number.

361920481 is a deficient number, since it is larger than the sum of its proper divisors (27840051).

361920481 is a wasteful number, since it uses less digits than its factorization.

361920481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27840050.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 361920481 is about 19024.2077627427. The cubic root of 361920481 is about 712.6414081085.

The spelling of 361920481 in words is "three hundred sixty-one million, nine hundred twenty thousand, four hundred eighty-one".