1148307644 has 24 divisors (see below), whose sum is σ = 2193727536. Its totient is φ = 521600000.

The previous prime is 1148307613. The next prime is 1148307659. The reversal of 1148307644 is 4467038411.

It is a happy number.

It is a super-2 number, since 2×1148307644² = 2637220890537661472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1148307598 and 1148307607.

It is a congruent number.

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, 62294 + ... + 78594.

It is an arithmetic number, because the mean of its divisors is an integer number (91405314).

Almost surely, 2^1148307644 is an apocalyptic number.

It is an amenable number.

1148307644 is a deficient number, since it is larger than the sum of its proper divisors (1045419892).

1148307644 is a wasteful number, since it uses less digits than its factorization.

1148307644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17917 (or 17915 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 1148307644 is about 33886.6883008653. The cubic root of 1148307644 is about 1047.1753693547.

The spelling of 1148307644 in words is "one billion, one hundred forty-eight million, three hundred seven thousand, six hundred forty-four".