1149620823 has 32 divisors (see below), whose sum is σ = 1864255680. Its totient is φ = 695848320.

The previous prime is 1149620809. The next prime is 1149620873. The reversal of 1149620823 is 3280269411.

1149620823 is a `hidden beast` number, since 1 + 1 + 4 + 9 + 620 + 8 + 23 = 666.

It is not a de Polignac number, because 1149620823 - 2⁴ = 1149620807 is a prime.

It is a super-3 number, since 3×1149620823³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149620803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5436 + ... + 48257.

It is an arithmetic number, because the mean of its divisors is an integer number (58257990).

Almost surely, 2^1149620823 is an apocalyptic number.

1149620823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1149620823 is a deficient number, since it is larger than the sum of its proper divisors (714634857).

1149620823 is a wasteful number, since it uses less digits than its factorization.

1149620823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53776 (or 53770 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1149620823 is about 33906.0587948526. The cubic root of 1149620823 is about 1047.5743927510.

The spelling of 1149620823 in words is "one billion, one hundred forty-nine million, six hundred twenty thousand, eight hundred twenty-three".