2381542091 has 2 divisors, whose sum is σ = 2381542092. Its totient is φ = 2381542090.

The previous prime is 2381542049. The next prime is 2381542127. The reversal of 2381542091 is 1902451832.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2381542091 is a prime.

It is not a weakly prime, because it can be changed into another prime (2381544091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1190771045 + 1190771046.

It is an arithmetic number, because the mean of its divisors is an integer number (1190771046).

Almost surely, 2^2381542091 is an apocalyptic number.

2381542091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381542091 is an equidigital number, since it uses as much as digits as its factorization.

2381542091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 2381542091 is about 48801.0460031340. The cubic root of 2381542091 is about 1335.4247487224.

The spelling of 2381542091 in words is "two billion, three hundred eighty-one million, five hundred forty-two thousand, ninety-one".