2064562381 has 4 divisors (see below), whose sum is σ = 2359499872. Its totient is φ = 1769624892.

The previous prime is 2064562369. The next prime is 2064562387. The reversal of 2064562381 is 1832654602.

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 not a de Polignac number, because 2064562381 - 2¹⁵ = 2064529613 is a prime.

It is a super-2 number, since 2×2064562381² = 8524835650080778322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2064562381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2064562387) 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, 147468735 + ... + 147468748.

It is an arithmetic number, because the mean of its divisors is an integer number (589874968).

Almost surely, 2^2064562381 is an apocalyptic number.

It is an amenable number.

2064562381 is a deficient number, since it is larger than the sum of its proper divisors (294937491).

2064562381 is an equidigital number, since it uses as much as digits as its factorization.

2064562381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294937490.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 2064562381 is about 45437.4557056180. The cubic root of 2064562381 is about 1273.3349802083.

The spelling of 2064562381 in words is "two billion, sixty-four million, five hundred sixty-two thousand, three hundred eighty-one".