2291261974 has 12 divisors (see below), whose sum is σ = 3502972116. Its totient is φ = 1124012552.

The previous prime is 2291261969. The next prime is 2291261981. The reversal of 2291261974 is 4791621922.

It is a self number, because there is not a number n which added to its sum of digits gives 2291261974.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 198304 + ... + 209539.

It is an arithmetic number, because the mean of its divisors is an integer number (291914343).

Almost surely, 2^2291261974 is an apocalyptic number.

2291261974 is a deficient number, since it is larger than the sum of its proper divisors (1211710142).

2291261974 is an equidigital number, since it uses as much as digits as its factorization.

2291261974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407951 (or 407898 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 2291261974 is about 47867.1283241433. The cubic root of 2291261974 is about 1318.3323702789.

The spelling of 2291261974 in words is "two billion, two hundred ninety-one million, two hundred sixty-one thousand, nine hundred seventy-four".