2154274691 has 8 divisors (see below), whose sum is σ = 2248751904. Its totient is φ = 2059865280.

The previous prime is 2154274613. The next prime is 2154274741. The reversal of 2154274691 is 1964724512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2154274691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154270691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54431 + ... + 85271.

It is an arithmetic number, because the mean of its divisors is an integer number (281093988).

Almost surely, 2^2154274691 is an apocalyptic number.

2154274691 is a deficient number, since it is larger than the sum of its proper divisors (94477213).

2154274691 is a wasteful number, since it uses less digits than its factorization.

2154274691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33901.

The product of its digits is 120960, while the sum is 41.

The square root of 2154274691 is about 46414.1647668037. The cubic root of 2154274691 is about 1291.5176919235.

The spelling of 2154274691 in words is "two billion, one hundred fifty-four million, two hundred seventy-four thousand, six hundred ninety-one".