2354190721 has 2 divisors, whose sum is σ = 2354190722. Its totient is φ = 2354190720.

The previous prime is 2354190701. The next prime is 2354190731. The reversal of 2354190721 is 1270914532.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1735972225 + 618218496 = 41665^2 + 24864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2354190721 is a prime.

It is not a weakly prime, because it can be changed into another prime (2354190701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177095360 + 1177095361.

It is an arithmetic number, because the mean of its divisors is an integer number (1177095361).

Almost surely, 2^2354190721 is an apocalyptic number.

It is an amenable number.

2354190721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2354190721 is an equidigital number, since it uses as much as digits as its factorization.

2354190721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2354190721 is about 48520.0033079141. The cubic root of 2354190721 is about 1330.2927203518.

The spelling of 2354190721 in words is "two billion, three hundred fifty-four million, one hundred ninety thousand, seven hundred twenty-one".