7149851831 has 2 divisors, whose sum is σ = 7149851832. Its totient is φ = 7149851830.

The previous prime is 7149851827. The next prime is 7149851833. The reversal of 7149851831 is 1381589417.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7149851831 - 2² = 7149851827 is a prime.

It is a super-2 number, since 2×7149851831² (a number of 21 digits) contains 22 as substring.

Together with 7149851833, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7149851833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3574925915 + 3574925916.

It is an arithmetic number, because the mean of its divisors is an integer number (3574925916).

Almost surely, 2^7149851831 is an apocalyptic number.

7149851831 is a deficient number, since it is larger than the sum of its proper divisors (1).

7149851831 is an equidigital number, since it uses as much as digits as its factorization.

7149851831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 47.

The square root of 7149851831 is about 84556.7964802357. The cubic root of 7149851831 is about 1926.4852162896.

The spelling of 7149851831 in words is "seven billion, one hundred forty-nine million, eight hundred fifty-one thousand, eight hundred thirty-one".