1238622148 has 24 divisors (see below), whose sum is σ = 2179651320. Its totient is φ = 615874560.

The previous prime is 1238622139. The next prime is 1238622149. The reversal of 1238622148 is 8412268321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 403527744 + 835094404 = 20088^2 + 28898^2 .

It is a super-2 number, since 2×1238622148² = 3068369651032267808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1238622149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863640 + ... + 865072.

It is an arithmetic number, because the mean of its divisors is an integer number (90818805).

Almost surely, 2^1238622148 is an apocalyptic number.

It is an amenable number.

1238622148 is a deficient number, since it is larger than the sum of its proper divisors (941029172).

1238622148 is a wasteful number, since it uses less digits than its factorization.

1238622148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2487 (or 2485 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 1238622148 is about 35194.0641017772. The cubic root of 1238622148 is about 1073.9389994564.

The spelling of 1238622148 in words is "one billion, two hundred thirty-eight million, six hundred twenty-two thousand, one hundred forty-eight".