1535156642 has 16 divisors (see below), whose sum is σ = 2502124800. Its totient is φ = 703721520.

The previous prime is 1535156573. The next prime is 1535156647. The reversal of 1535156642 is 2466515351.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 1535156596 and 1535156605.

It is not an unprimeable number, because it can be changed into a prime (1535156647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650417 + ... + 652772.

It is an arithmetic number, because the mean of its divisors is an integer number (156382800).

Almost surely, 2^1535156642 is an apocalyptic number.

1535156642 is a deficient number, since it is larger than the sum of its proper divisors (966968158).

1535156642 is a wasteful number, since it uses less digits than its factorization.

1535156642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303241.

The product of its digits is 108000, while the sum is 38.

The square root of 1535156642 is about 39181.0750490591. The cubic root of 1535156642 is about 1153.5884487121.

The spelling of 1535156642 in words is "one billion, five hundred thirty-five million, one hundred fifty-six thousand, six hundred forty-two".