149797651 has 2 divisors, whose sum is σ = 149797652. Its totient is φ = 149797650.

The previous prime is 149797621. The next prime is 149797657. The reversal of 149797651 is 156797941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149797651 - 2⁹ = 149797139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149797595 and 149797604.

It is not a weakly prime, because it can be changed into another prime (149797657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74898825 + 74898826.

It is an arithmetic number, because the mean of its divisors is an integer number (74898826).

Almost surely, 2^149797651 is an apocalyptic number.

149797651 is a deficient number, since it is larger than the sum of its proper divisors (1).

149797651 is an equidigital number, since it uses as much as digits as its factorization.

149797651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 49.

The square root of 149797651 is about 12239.1850627401. The cubic root of 149797651 is about 531.0902571894.

The spelling of 149797651 in words is "one hundred forty-nine million, seven hundred ninety-seven thousand, six hundred fifty-one".