22402051949 has 2 divisors, whose sum is σ = 22402051950. Its totient is φ = 22402051948.

The previous prime is 22402051943. The next prime is 22402051967. The reversal of 22402051949 is 94915020422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17294091049 + 5107960900 = 131507^2 + 71470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22402051949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22402051943) 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, 11201025974 + 11201025975.

It is an arithmetic number, because the mean of its divisors is an integer number (11201025975).

Almost surely, 2^22402051949 is an apocalyptic number.

It is an amenable number.

22402051949 is a deficient number, since it is larger than the sum of its proper divisors (1).

22402051949 is an equidigital number, since it uses as much as digits as its factorization.

22402051949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 22402051949 in words is "twenty-two billion, four hundred two million, fifty-one thousand, nine hundred forty-nine".