19372949 has 2 divisors, whose sum is σ = 19372950. Its totient is φ = 19372948.

The previous prime is 19372909. The next prime is 19372963. The reversal of 19372949 is 94927391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19140625 + 232324 = 4375^2 + 482^2 .

It is a cyclic number.

It is not a de Polignac number, because 19372949 - 2²⁰ = 18324373 is a prime.

It is a super-2 number, since 2×19372949² = 750622305913202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19372909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9686474 + 9686475.

It is an arithmetic number, because the mean of its divisors is an integer number (9686475).

Almost surely, 2^19372949 is an apocalyptic number.

It is an amenable number.

19372949 is a deficient number, since it is larger than the sum of its proper divisors (1).

19372949 is an equidigital number, since it uses as much as digits as its factorization.

19372949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 44.

The square root of 19372949 is about 4401.4712313044. The cubic root of 19372949 is about 268.5747901426.

The spelling of 19372949 in words is "nineteen million, three hundred seventy-two thousand, nine hundred forty-nine".