1642231153 has 4 divisors (see below), whose sum is σ = 1653107008. Its totient is φ = 1631355300.

The previous prime is 1642231139. The next prime is 1642231177. The reversal of 1642231153 is 3511322461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3511322461 = 167 ⋅21025883.

It is a cyclic number.

It is not a de Polignac number, because 1642231153 - 2⁵ = 1642231121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1642231853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5437701 + ... + 5438002.

It is an arithmetic number, because the mean of its divisors is an integer number (413276752).

Almost surely, 2^1642231153 is an apocalyptic number.

It is an amenable number.

1642231153 is a deficient number, since it is larger than the sum of its proper divisors (10875855).

1642231153 is a wasteful number, since it uses less digits than its factorization.

1642231153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10875854.

The product of its digits is 4320, while the sum is 28.

The square root of 1642231153 is about 40524.4512979510. The cubic root of 1642231153 is about 1179.8082502270.

The spelling of 1642231153 in words is "one billion, six hundred forty-two million, two hundred thirty-one thousand, one hundred fifty-three".