2154150439 has 4 divisors (see below), whose sum is σ = 2461886224. Its totient is φ = 1846414656.

The previous prime is 2154150419. The next prime is 2154150463. The reversal of 2154150439 is 9340514512.

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

It is a cyclic number.

It is not a de Polignac number, because 2154150439 - 2⁵ = 2154150407 is a prime.

It is a super-2 number, since 2×2154150439² = 9280728227687785442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154150409) 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, 153867882 + ... + 153867895.

It is an arithmetic number, because the mean of its divisors is an integer number (615471556).

Almost surely, 2^2154150439 is an apocalyptic number.

2154150439 is a deficient number, since it is larger than the sum of its proper divisors (307735785).

2154150439 is an equidigital number, since it uses as much as digits as its factorization.

2154150439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307735784.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 2154150439 is about 46412.8262337040. The cubic root of 2154150439 is about 1291.4928611777.

The spelling of 2154150439 in words is "two billion, one hundred fifty-four million, one hundred fifty thousand, four hundred thirty-nine".