1535434157 has 2 divisors, whose sum is σ = 1535434158. Its totient is φ = 1535434156.

The previous prime is 1535434139. The next prime is 1535434189. The reversal of 1535434157 is 7514345351.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1482712036 + 52722121 = 38506^2 + 7261^2 .

It is a cyclic number.

It is not a de Polignac number, because 1535434157 - 2²⁰ = 1534385581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1535434157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1535434127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767717078 + 767717079.

It is an arithmetic number, because the mean of its divisors is an integer number (767717079).

Almost surely, 2^1535434157 is an apocalyptic number.

It is an amenable number.

1535434157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1535434157 is an equidigital number, since it uses as much as digits as its factorization.

1535434157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 38.

The square root of 1535434157 is about 39184.6163309021. The cubic root of 1535434157 is about 1153.6579571042.

The spelling of 1535434157 in words is "one billion, five hundred thirty-five million, four hundred thirty-four thousand, one hundred fifty-seven".