309245648354 has 4 divisors (see below), whose sum is σ = 463868472534. Its totient is φ = 154622824176.

The previous prime is 309245648329. The next prime is 309245648357. The reversal of 309245648354 is 453846542903.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 249873016129 + 59372632225 = 499873^2 + 243665^2 .

It is a junction number, because it is equal to n+sod(n) for n = 309245648296 and 309245648305.

It is not an unprimeable number, because it can be changed into a prime (309245648357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77311412087 + ... + 77311412090.

Almost surely, 2^309245648354 is an apocalyptic number.

309245648354 is a deficient number, since it is larger than the sum of its proper divisors (154622824180).

309245648354 is a wasteful number, since it uses less digits than its factorization.

309245648354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154622824179.

The product of its (nonzero) digits is 12441600, while the sum is 53.

The spelling of 309245648354 in words is "three hundred nine billion, two hundred forty-five million, six hundred forty-eight thousand, three hundred fifty-four".