149249651 has 2 divisors, whose sum is σ = 149249652. Its totient is φ = 149249650.

The previous prime is 149249641. The next prime is 149249671. The reversal of 149249651 is 156942941.

It is a weak prime.

It is an emirp because it is prime and its reverse (156942941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149249651 - 2⁶ = 149249587 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149249599 and 149249608.

It is not a weakly prime, because it can be changed into another prime (149249621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74624825 + 74624826.

It is an arithmetic number, because the mean of its divisors is an integer number (74624826).

Almost surely, 2^149249651 is an apocalyptic number.

149249651 is a deficient number, since it is larger than the sum of its proper divisors (1).

149249651 is an equidigital number, since it uses as much as digits as its factorization.

149249651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The square root of 149249651 is about 12216.7774392431. Note that the first 3 decimals coincide. The cubic root of 149249651 is about 530.4418423005.

The spelling of 149249651 in words is "one hundred forty-nine million, two hundred forty-nine thousand, six hundred fifty-one".