1143628157 has 8 divisors (see below), whose sum is σ = 1320478656. Its totient is φ = 970146432.

The previous prime is 1143628133. The next prime is 1143628181. The reversal of 1143628157 is 7518263411.

It is an interprime number because it is at equal distance from previous prime (1143628133) and next prime (1143628181).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143628157 - 2¹² = 1143624061 is a prime.

It is a super-2 number, since 2×1143628157² = 2615770722966433298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1143628157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143628127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841463 + ... + 842820.

It is an arithmetic number, because the mean of its divisors is an integer number (165059832).

Almost surely, 2^1143628157 is an apocalyptic number.

It is an amenable number.

1143628157 is a deficient number, since it is larger than the sum of its proper divisors (176850499).

1143628157 is an equidigital number, since it uses as much as digits as its factorization.

1143628157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684387.

The product of its digits is 40320, while the sum is 38.

The square root of 1143628157 is about 33817.5717194479. The cubic root of 1143628157 is about 1045.7509790015.

It can be divided in two parts, 11436 and 28157, that added together give a palindrome (39593).

The spelling of 1143628157 in words is "one billion, one hundred forty-three million, six hundred twenty-eight thousand, one hundred fifty-seven".