149876261 has 2 divisors, whose sum is σ = 149876262. Its totient is φ = 149876260.

The previous prime is 149876201. The next prime is 149876281. The reversal of 149876261 is 162678941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146289025 + 3587236 = 12095^2 + 1894^2 .

It is a cyclic number.

It is not a de Polignac number, because 149876261 - 2¹⁰ = 149875237 is a prime.

It is a super-3 number, since 3×149876261³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149876201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74938130 + 74938131.

It is an arithmetic number, because the mean of its divisors is an integer number (74938131).

Almost surely, 2^149876261 is an apocalyptic number.

It is an amenable number.

149876261 is a deficient number, since it is larger than the sum of its proper divisors (1).

149876261 is an equidigital number, since it uses as much as digits as its factorization.

149876261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 149876261 is about 12242.3960481599. The cubic root of 149876261 is about 531.1831418330.

The spelling of 149876261 in words is "one hundred forty-nine million, eight hundred seventy-six thousand, two hundred sixty-one".