2155948907 has 8 divisors (see below), whose sum is σ = 2571069696. Its totient is φ = 1767610152.

The previous prime is 2155948889. The next prime is 2155948919. The reversal of 2155948907 is 7098495512.

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

It is not a de Polignac number, because 2155948907 - 2¹⁴ = 2155932523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155948957) 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, 6695333 + ... + 6695654.

It is an arithmetic number, because the mean of its divisors is an integer number (321383712).

Almost surely, 2^2155948907 is an apocalyptic number.

2155948907 is a deficient number, since it is larger than the sum of its proper divisors (415120789).

2155948907 is a wasteful number, since it uses less digits than its factorization.

2155948907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13391017.

The product of its (nonzero) digits is 907200, while the sum is 50.

The square root of 2155948907 is about 46432.1968788900. The cubic root of 2155948907 is about 1291.8521772283.

The spelling of 2155948907 in words is "two billion, one hundred fifty-five million, nine hundred forty-eight thousand, nine hundred seven".