2154402396 has 18 divisors (see below), whose sum is σ = 5445850592. Its totient is φ = 718134120.

The previous prime is 2154402391. The next prime is 2154402413. The reversal of 2154402396 is 6932044512.

It is a happy number.

2154402396 is a `hidden beast` number, since 2 + 1 + 544 + 0 + 23 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 59844511 = 2154402396 / (2 + 1 + 5 + 4 + 4 + 0 + 2 + 3 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 2154402396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154402391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29922220 + ... + 29922291.

Almost surely, 2^2154402396 is an apocalyptic number.

It is an amenable number.

2154402396 is an abundant number, since it is smaller than the sum of its proper divisors (3291448196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2154402396 is a wasteful number, since it uses less digits than its factorization.

2154402396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59844521 (or 59844516 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 2154402396 is about 46415.5404579113. The cubic root of 2154402396 is about 1291.5432117281.

It can be divided in two parts, 2154 and 402396, that added together give a triangular number (404550 = T₈₉₉).

The spelling of 2154402396 in words is "two billion, one hundred fifty-four million, four hundred two thousand, three hundred ninety-six".