2261970381 has 16 divisors (see below), whose sum is σ = 3319260480. Its totient is φ = 1358757120.

The previous prime is 2261970371. The next prime is 2261970413. The reversal of 2261970381 is 1830791622.

It is not a de Polignac number, because 2261970381 - 2⁷ = 2261970253 is a prime.

It is a super-2 number, since 2×2261970381² = 10233020009042570322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261970371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299566 + ... + 307023.

It is an arithmetic number, because the mean of its divisors is an integer number (207453780).

Almost surely, 2^2261970381 is an apocalyptic number.

It is an amenable number.

2261970381 is a deficient number, since it is larger than the sum of its proper divisors (1057290099).

2261970381 is a wasteful number, since it uses less digits than its factorization.

2261970381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606716.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 2261970381 is about 47560.1764189327. The cubic root of 2261970381 is about 1312.6903862414.

The spelling of 2261970381 in words is "two billion, two hundred sixty-one million, nine hundred seventy thousand, three hundred eighty-one".