147912813 has 6 divisors (see below), whose sum is σ = 213651854. Its totient is φ = 98608536.

The previous prime is 147912799. The next prime is 147912829. The reversal of 147912813 is 318219741.

It is a happy number.

147912813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 116575209 + 31337604 = 10797^2 + 5598^2 .

It is not a de Polignac number, because 147912813 - 2⁴ = 147912797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147912893) 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, 8217370 + ... + 8217387.

Almost surely, 2^147912813 is an apocalyptic number.

It is an amenable number.

147912813 is a deficient number, since it is larger than the sum of its proper divisors (65739041).

147912813 is a wasteful number, since it uses less digits than its factorization.

147912813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16434763 (or 16434760 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 147912813 is about 12161.9411690733. The cubic root of 147912813 is about 528.8533570564.

The spelling of 147912813 in words is "one hundred forty-seven million, nine hundred twelve thousand, eight hundred thirteen".