1148638401 has 24 divisors (see below), whose sum is σ = 1738367904. Its totient is φ = 757848960.

The previous prime is 1148638399. The next prime is 1148638417. The reversal of 1148638401 is 1048368411.

It is a happy number.

1148638401 is a `hidden beast` number, since 1 + 14 + 8 + 638 + 4 + 0 + 1 = 666.

It is not a de Polignac number, because 1148638401 - 2¹ = 1148638399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1148638441) 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, 795 + ... + 47936.

It is an arithmetic number, because the mean of its divisors is an integer number (72431996).

Almost surely, 2^1148638401 is an apocalyptic number.

It is an amenable number.

1148638401 is a deficient number, since it is larger than the sum of its proper divisors (589729503).

1148638401 is an frugal number, since it uses more digits than its factorization.

1148638401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48843 (or 48831 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1148638401 is about 33891.5682877025. The cubic root of 1148638401 is about 1047.2759020345.

The spelling of 1148638401 in words is "one billion, one hundred forty-eight million, six hundred thirty-eight thousand, four hundred one".