1243151793 has 48 divisors (see below), whose sum is σ = 2016792960. Its totient is φ = 760679424.

The previous prime is 1243151783. The next prime is 1243151797. The reversal of 1243151793 is 3971513421.

1243151793 is a `hidden beast` number, since 1 + 24 + 31 + 517 + 93 = 666.

1243151793 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1243151793 - 2⁵ = 1243151761 is a prime.

It is a super-2 number, since 2×1243151793² = 3090852760878229698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1243151797) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 608668 + ... + 610706.

It is an arithmetic number, because the mean of its divisors is an integer number (42016520).

Almost surely, 2^1243151793 is an apocalyptic number.

1243151793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1243151793 is a deficient number, since it is larger than the sum of its proper divisors (773641167).

1243151793 is a wasteful number, since it uses less digits than its factorization.

1243151793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260 (or 2248 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 1243151793 is about 35258.3577751432. The cubic root of 1243151793 is about 1075.2465395966.

The spelling of 1243151793 in words is "one billion, two hundred forty-three million, one hundred fifty-one thousand, seven hundred ninety-three".