2154607654 has 4 divisors (see below), whose sum is σ = 3231911484. Its totient is φ = 1077303826.

The previous prime is 2154607633. The next prime is 2154607661. The reversal of 2154607654 is 4567064512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538651912 + ... + 538651915.

It is an arithmetic number, because the mean of its divisors is an integer number (807977871).

Almost surely, 2^2154607654 is an apocalyptic number.

2154607654 is a deficient number, since it is larger than the sum of its proper divisors (1077303830).

2154607654 is a wasteful number, since it uses less digits than its factorization.

2154607654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077303829.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 2154607654 is about 46417.7514965988. The cubic root of 2154607654 is about 1291.5842271482.

The spelling of 2154607654 in words is "two billion, one hundred fifty-four million, six hundred seven thousand, six hundred fifty-four".