148131978 has 16 divisors (see below), whose sum is σ = 297030240. Its totient is φ = 49249616.

The previous prime is 148131967. The next prime is 148131989. The reversal of 148131978 is 879131841.

It is an interprime number because it is at equal distance from previous prime (148131967) and next prime (148131989).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29400 + ... + 34067.

It is an arithmetic number, because the mean of its divisors is an integer number (18564390).

Almost surely, 2^148131978 is an apocalyptic number.

148131978 is an abundant number, since it is smaller than the sum of its proper divisors (148898262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

148131978 is a wasteful number, since it uses less digits than its factorization.

148131978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63861.

The product of its digits is 48384, while the sum is 42.

The square root of 148131978 is about 12170.9481142596. The cubic root of 148131978 is about 529.1144319063.

The spelling of 148131978 in words is "one hundred forty-eight million, one hundred thirty-one thousand, nine hundred seventy-eight".