7149888923 has 4 divisors (see below), whose sum is σ = 7150081080. Its totient is φ = 7149696768.

The previous prime is 7149888901. The next prime is 7149888943. The reversal of 7149888923 is 3298889417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3298889417 = 211 ⋅15634547.

It is a cyclic number.

It is not a de Polignac number, because 7149888923 - 2²⁶ = 7082780059 is a prime.

It is a super-2 number, since 2×7149888923² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7149888943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20390 + ... + 121307.

It is an arithmetic number, because the mean of its divisors is an integer number (1787520270).

Almost surely, 2^7149888923 is an apocalyptic number.

7149888923 is a deficient number, since it is larger than the sum of its proper divisors (192157).

7149888923 is a wasteful number, since it uses less digits than its factorization.

7149888923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192156.

The product of its digits is 6967296, while the sum is 59.

The square root of 7149888923 is about 84557.0158118178. The cubic root of 7149888923 is about 1926.4885476904.

The spelling of 7149888923 in words is "seven billion, one hundred forty-nine million, eight hundred eighty-eight thousand, nine hundred twenty-three".