148821651 has 24 divisors (see below), whose sum is σ = 242347280. Its totient is φ = 90192960.

The previous prime is 148821643. The next prime is 148821653. The reversal of 148821651 is 156128841.

It is not a de Polignac number, because 148821651 - 2³ = 148821643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148821653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19510 + ... + 26043.

Almost surely, 2^148821651 is an apocalyptic number.

148821651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

148821651 is a deficient number, since it is larger than the sum of its proper divisors (93525629).

148821651 is a wasteful number, since it uses less digits than its factorization.

148821651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45584 (or 45567 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 148821651 is about 12199.2479686250. The cubic root of 148821651 is about 529.9343113082.

The spelling of 148821651 in words is "one hundred forty-eight million, eight hundred twenty-one thousand, six hundred fifty-one".