340778018 has 16 divisors (see below), whose sum is σ = 584573760. Its totient is φ = 145952016.

The previous prime is 340778003. The next prime is 340778021. The reversal of 340778018 is 810877043.

It is a super-2 number, since 2×340778018² = 232259315104016648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16805 + ... + 31047.

It is an arithmetic number, because the mean of its divisors is an integer number (36535860).

Almost surely, 2^340778018 is an apocalyptic number.

340778018 is a deficient number, since it is larger than the sum of its proper divisors (243795742).

340778018 is a wasteful number, since it uses less digits than its factorization.

340778018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15961.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 340778018 is about 18460.1738345011. The cubic root of 340778018 is about 698.4851718346.

The spelling of 340778018 in words is "three hundred forty million, seven hundred seventy-eight thousand, eighteen".