148749761 has 4 divisors (see below), whose sum is σ = 148845312. Its totient is φ = 148654212.

The previous prime is 148749721. The next prime is 148749817. The reversal of 148749761 is 167947841.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 148749761 - 2²² = 144555457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148749701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45401 + ... + 48566.

It is an arithmetic number, because the mean of its divisors is an integer number (37211328).

Almost surely, 2^148749761 is an apocalyptic number.

It is an amenable number.

148749761 is a deficient number, since it is larger than the sum of its proper divisors (95551).

148749761 is an equidigital number, since it uses as much as digits as its factorization.

148749761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95550.

The product of its digits is 338688, while the sum is 47.

The square root of 148749761 is about 12196.3011196018. The cubic root of 148749761 is about 529.8489672887.

The spelling of 148749761 in words is "one hundred forty-eight million, seven hundred forty-nine thousand, seven hundred sixty-one".