1148785840 has 20 divisors (see below), whose sum is σ = 2670927264. Its totient is φ = 459514304.

The previous prime is 1148785831. The next prime is 1148785843. The reversal of 1148785840 is 485878411.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (1148785843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7179832 + ... + 7179991.

Almost surely, 2^1148785840 is an apocalyptic number.

1148785840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1148785840 is an abundant number, since it is smaller than the sum of its proper divisors (1522141424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1148785840 is a wasteful number, since it uses less digits than its factorization.

1148785840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14359836 (or 14359830 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 46.

The square root of 1148785840 is about 33893.7433754373. The cubic root of 1148785840 is about 1047.3207094939.

The spelling of 1148785840 in words is "one billion, one hundred forty-eight million, seven hundred eighty-five thousand, eight hundred forty".