2291122387 has 2 divisors, whose sum is σ = 2291122388. Its totient is φ = 2291122386.

The previous prime is 2291122373. The next prime is 2291122403. The reversal of 2291122387 is 7832211922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2291122387 - 2³¹ = 143638739 is a prime.

It is a super-4 number, since 4×2291122387⁴ (a number of 39 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (2291122357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145561193 + 1145561194.

It is an arithmetic number, because the mean of its divisors is an integer number (1145561194).

Almost surely, 2^2291122387 is an apocalyptic number.

2291122387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291122387 is an equidigital number, since it uses as much as digits as its factorization.

2291122387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 2291122387 is about 47865.6702345219. The cubic root of 2291122387 is about 1318.3055981623.

The spelling of 2291122387 in words is "two billion, two hundred ninety-one million, one hundred twenty-two thousand, three hundred eighty-seven".