148518739 has 2 divisors, whose sum is σ = 148518740. Its totient is φ = 148518738.

The previous prime is 148518701. The next prime is 148518743. The reversal of 148518739 is 937815841.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148518739 is a prime.

It is not a weakly prime, because it can be changed into another prime (148518779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74259369 + 74259370.

It is an arithmetic number, because the mean of its divisors is an integer number (74259370).

Almost surely, 2^148518739 is an apocalyptic number.

148518739 is a deficient number, since it is larger than the sum of its proper divisors (1).

148518739 is an equidigital number, since it uses as much as digits as its factorization.

148518739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 46.

The square root of 148518739 is about 12186.8264531830. The cubic root of 148518739 is about 529.5745238393.

It can be divided in two parts, 1485187 and 39, that added together give a triangular number (1485226 = T₁₇₂₃).

The spelling of 148518739 in words is "one hundred forty-eight million, five hundred eighteen thousand, seven hundred thirty-nine".