1143490772 has 24 divisors (see below), whose sum is σ = 2057330184. Its totient is φ = 555714432.

The previous prime is 1143490753. The next prime is 1143490801. The reversal of 1143490772 is 2770943411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 180257476 + 963233296 = 13426^2 + 31036^2 .

It is a super-2 number, since 2×1143490772² = 2615142291298311968, which contains 22 as substring.

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, 161858 + ... + 168774.

It is an arithmetic number, because the mean of its divisors is an integer number (85722091).

Almost surely, 2^1143490772 is an apocalyptic number.

It is an amenable number.

1143490772 is a deficient number, since it is larger than the sum of its proper divisors (913839412).

1143490772 is a wasteful number, since it uses less digits than its factorization.

1143490772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8075 (or 8073 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 1143490772 is about 33815.5403919559. The cubic root of 1143490772 is about 1045.7091016800.

The spelling of 1143490772 in words is "one billion, one hundred forty-three million, four hundred ninety thousand, seven hundred seventy-two".