1532146993 has 8 divisors (see below), whose sum is σ = 1659544488. Its totient is φ = 1406112384.

The previous prime is 1532146951. The next prime is 1532146997. The reversal of 1532146993 is 3996412351.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6697744 + 1525449249 = 2588^2 + 39057^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1532146993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1532146997) 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, 338380 + ... + 342877.

It is an arithmetic number, because the mean of its divisors is an integer number (207443061).

Almost surely, 2^1532146993 is an apocalyptic number.

1532146993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1532146993 is a deficient number, since it is larger than the sum of its proper divisors (127397495).

1532146993 is a wasteful number, since it uses less digits than its factorization.

1532146993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681443.

The product of its digits is 174960, while the sum is 43.

The square root of 1532146993 is about 39142.6492843803. The cubic root of 1532146993 is about 1152.8340918894.

The spelling of 1532146993 in words is "one billion, five hundred thirty-two million, one hundred forty-six thousand, nine hundred ninety-three".