2415890381 has 4 divisors (see below), whose sum is σ = 2467292352. Its totient is φ = 2364488412.

The previous prime is 2415890363. The next prime is 2415890429. The reversal of 2415890381 is 1830985142.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2415890381 is a prime.

It is a super-2 number, since 2×2415890381² = 11673052666016650322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2415890681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25700915 + ... + 25701008.

It is an arithmetic number, because the mean of its divisors is an integer number (616823088).

Almost surely, 2^2415890381 is an apocalyptic number.

It is an amenable number.

2415890381 is a deficient number, since it is larger than the sum of its proper divisors (51401971).

2415890381 is an equidigital number, since it uses as much as digits as its factorization.

2415890381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51401970.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 2415890381 is about 49151.7078136660. The cubic root of 2415890381 is about 1341.8142761573.

The spelling of 2415890381 in words is "two billion, four hundred fifteen million, eight hundred ninety thousand, three hundred eighty-one".