147800819 has 2 divisors, whose sum is σ = 147800820. Its totient is φ = 147800818.

The previous prime is 147800813. The next prime is 147800831. The reversal of 147800819 is 918008741.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 147800819 - 2¹² = 147796723 is a prime.

It is a super-2 number, since 2×147800819² = 43690164194141522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (147800813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73900409 + 73900410.

It is an arithmetic number, because the mean of its divisors is an integer number (73900410).

Almost surely, 2^147800819 is an apocalyptic number.

147800819 is a deficient number, since it is larger than the sum of its proper divisors (1).

147800819 is an equidigital number, since it uses as much as digits as its factorization.

147800819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 147800819 is about 12157.3360157561. The cubic root of 147800819 is about 528.7198474200.

The spelling of 147800819 in words is "one hundred forty-seven million, eight hundred thousand, eight hundred nineteen".