2154947433 has 16 divisors (see below), whose sum is σ = 2888671680. Its totient is φ = 1428945984.

The previous prime is 2154947429. The next prime is 2154947449. The reversal of 2154947433 is 3347494512.

It is a happy number.

It is not a de Polignac number, because 2154947433 - 2² = 2154947429 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2154947033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 589710 + ... + 593352.

It is an arithmetic number, because the mean of its divisors is an integer number (180541980).

Almost surely, 2^2154947433 is an apocalyptic number.

It is an amenable number.

2154947433 is a deficient number, since it is larger than the sum of its proper divisors (733724247).

2154947433 is a wasteful number, since it uses less digits than its factorization.

2154947433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648.

The product of its digits is 362880, while the sum is 42.

The square root of 2154947433 is about 46421.4113637231. The cubic root of 2154947433 is about 1291.6521173322.

The spelling of 2154947433 in words is "two billion, one hundred fifty-four million, nine hundred forty-seven thousand, four hundred thirty-three".