1552373969 has 2 divisors, whose sum is σ = 1552373970. Its totient is φ = 1552373968.

The previous prime is 1552373923. The next prime is 1552373993. The reversal of 1552373969 is 9693732551.

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., 1445520400 + 106853569 = 38020^2 + 10337^2 .

It is a cyclic number.

It is not a de Polignac number, because 1552373969 - 2²⁰ = 1551325393 is a prime.

It is a super-2 number, since 2×1552373969² = 4819729879257625922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1552373909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776186984 + 776186985.

It is an arithmetic number, because the mean of its divisors is an integer number (776186985).

Almost surely, 2^1552373969 is an apocalyptic number.

It is an amenable number.

1552373969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552373969 is an equidigital number, since it uses as much as digits as its factorization.

1552373969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1530900, while the sum is 50.

The square root of 1552373969 is about 39400.1772711748. The cubic root of 1552373969 is about 1157.8850605749.

The spelling of 1552373969 in words is "one billion, five hundred fifty-two million, three hundred seventy-three thousand, nine hundred sixty-nine".