1653454642 has 64 divisors (see below), whose sum is σ = 2991292416. Its totient is φ = 670746240.

The previous prime is 1653454637. The next prime is 1653454661. The reversal of 1653454642 is 2464543561.

It is a junction number, because it is equal to n+sod(n) for n = 1653454595 and 1653454604.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4505143 + ... + 4505509.

It is an arithmetic number, because the mean of its divisors is an integer number (46738944).

Almost surely, 2^1653454642 is an apocalyptic number.

1653454642 is a deficient number, since it is larger than the sum of its proper divisors (1337837774).

1653454642 is a wasteful number, since it uses less digits than its factorization.

1653454642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631.

The product of its digits is 345600, while the sum is 40.

The square root of 1653454642 is about 40662.6934917007. The cubic root of 1653454642 is about 1182.4898689363.

The spelling of 1653454642 in words is "one billion, six hundred fifty-three million, four hundred fifty-four thousand, six hundred forty-two".