1230149773 has 4 divisors (see below), whose sum is σ = 1260153468. Its totient is φ = 1200146080.

The previous prime is 1230149771. The next prime is 1230149819. The reversal of 1230149773 is 3779410321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3779410321 = 97 ⋅38962993.

It can be written as a sum of positive squares in 2 ways, for example, as 221325129 + 1008824644 = 14877^2 + 31762^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230149773 - 2¹ = 1230149771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230149771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15001786 + ... + 15001867.

It is an arithmetic number, because the mean of its divisors is an integer number (315038367).

Almost surely, 2^1230149773 is an apocalyptic number.

It is an amenable number.

1230149773 is a deficient number, since it is larger than the sum of its proper divisors (30003695).

1230149773 is an equidigital number, since it uses as much as digits as its factorization.

1230149773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30003694.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 1230149773 is about 35073.4910295511. The cubic root of 1230149773 is about 1071.4847565364.

The spelling of 1230149773 in words is "one billion, two hundred thirty million, one hundred forty-nine thousand, seven hundred seventy-three".