1143901693 has 12 divisors (see below), whose sum is σ = 1261922620. Its totient is φ = 1036126080.

The previous prime is 1143901667. The next prime is 1143901709. The reversal of 1143901693 is 3961093411.

It can be written as a sum of positive squares in 2 ways, for example, as 169338169 + 974563524 = 13013^2 + 31218^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1143901693 is a prime.

It is a super-2 number, since 2×1143901693² = 2617022166496532498, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143901613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16453 + ... + 50581.

Almost surely, 2^1143901693 is an apocalyptic number.

It is an amenable number.

1143901693 is a deficient number, since it is larger than the sum of its proper divisors (118020927).

1143901693 is a wasteful number, since it uses less digits than its factorization.

1143901693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34428 (or 34417 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 1143901693 is about 33821.6157656609. The cubic root of 1143901693 is about 1045.8343475145.

The spelling of 1143901693 in words is "one billion, one hundred forty-three million, nine hundred one thousand, six hundred ninety-three".