149491745387 has 2 divisors, whose sum is σ = 149491745388. Its totient is φ = 149491745386.

The previous prime is 149491745363. The next prime is 149491745401. The reversal of 149491745387 is 783547194941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149491745387 - 2¹² = 149491741291 is a prime.

It is not a weakly prime, because it can be changed into another prime (149491745987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74745872693 + 74745872694.

It is an arithmetic number, because the mean of its divisors is an integer number (74745872694).

Almost surely, 2^149491745387 is an apocalyptic number.

149491745387 is a deficient number, since it is larger than the sum of its proper divisors (1).

149491745387 is an equidigital number, since it uses as much as digits as its factorization.

149491745387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30481920, while the sum is 62.

The spelling of 149491745387 in words is "one hundred forty-nine billion, four hundred ninety-one million, seven hundred forty-five thousand, three hundred eighty-seven".