1533469997 has 2 divisors, whose sum is σ = 1533469998. Its totient is φ = 1533469996.

The previous prime is 1533469991. The next prime is 1533470011. The reversal of 1533469997 is 7999643351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1533035716 + 434281 = 39154^2 + 659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1533469997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1533469991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 766734998 + 766734999.

It is an arithmetic number, because the mean of its divisors is an integer number (766734999).

Almost surely, 2^1533469997 is an apocalyptic number.

It is an amenable number.

1533469997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1533469997 is an equidigital number, since it uses as much as digits as its factorization.

1533469997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5511240, while the sum is 56.

The square root of 1533469997 is about 39159.5454136025. The cubic root of 1533469997 is about 1153.1658192692.

The spelling of 1533469997 in words is "one billion, five hundred thirty-three million, four hundred sixty-nine thousand, nine hundred ninety-seven".