1230143564 has 18 divisors (see below), whose sum is σ = 2331086940. Its totient is φ = 567758256.

The previous prime is 1230143561. The next prime is 1230143567. The reversal of 1230143564 is 4653410321.

It is an interprime number because it is at equal distance from previous prime (1230143561) and next prime (1230143567).

It is not an unprimeable number, because it can be changed into a prime (1230143561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 909194 + ... + 910545.

It is an arithmetic number, because the mean of its divisors is an integer number (129504830).

Almost surely, 2^1230143564 is an apocalyptic number.

It is an amenable number.

1230143564 is a deficient number, since it is larger than the sum of its proper divisors (1100943376).

1230143564 is a wasteful number, since it uses less digits than its factorization.

1230143564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819769 (or 1819754 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1230143564 is about 35073.4025152964. The cubic root of 1230143564 is about 1071.4829538128.

Adding to 1230143564 its reverse (4653410321), we get a palindrome (5883553885).

The spelling of 1230143564 in words is "one billion, two hundred thirty million, one hundred forty-three thousand, five hundred sixty-four".