148021973986 has 16 divisors (see below), whose sum is σ = 223013067264. Its totient is φ = 73684362784.

The previous prime is 148021973959. The next prime is 148021973993. The reversal of 148021973986 is 689379120841.

It is a self number, because there is not a number n which added to its sum of digits gives 148021973986.

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, 5488611 + ... + 5515513.

It is an arithmetic number, because the mean of its divisors is an integer number (13938316704).

Almost surely, 2^148021973986 is an apocalyptic number.

148021973986 is a deficient number, since it is larger than the sum of its proper divisors (74991093278).

148021973986 is a wasteful number, since it uses less digits than its factorization.

148021973986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38945.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 148021973986 in words is "one hundred forty-eight billion, twenty-one million, nine hundred seventy-three thousand, nine hundred eighty-six".