1533486397 has 2 divisors, whose sum is σ = 1533486398. Its totient is φ = 1533486396.

The previous prime is 1533486373. The next prime is 1533486401. The reversal of 1533486397 is 7936843351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 787868761 + 745617636 = 28069^2 + 27306^2 .

It is a cyclic number.

It is not a de Polignac number, because 1533486397 - 2²³ = 1525097789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1533486397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1533486307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 766743198 + 766743199.

It is an arithmetic number, because the mean of its divisors is an integer number (766743199).

Almost surely, 2^1533486397 is an apocalyptic number.

It is an amenable number.

1533486397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1533486397 is an equidigital number, since it uses as much as digits as its factorization.

1533486397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 49.

The square root of 1533486397 is about 39159.7548128177. The cubic root of 1533486397 is about 1153.1699301750.

The spelling of 1533486397 in words is "one billion, five hundred thirty-three million, four hundred eighty-six thousand, three hundred ninety-seven".