2170345642 has 16 divisors (see below), whose sum is σ = 3575856960. Its totient is φ = 983359872.

The previous prime is 2170345603. The next prime is 2170345721. The reversal of 2170345642 is 2465430712.

It is a junction number, because it is equal to n+sod(n) for n = 2170345598 and 2170345607.

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, 1240743 + ... + 1242490.

It is an arithmetic number, because the mean of its divisors is an integer number (223491060).

Almost surely, 2^2170345642 is an apocalyptic number.

2170345642 is a deficient number, since it is larger than the sum of its proper divisors (1405511318).

2170345642 is a wasteful number, since it uses less digits than its factorization.

2170345642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483277.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 2170345642 is about 46586.9685856464. The cubic root of 2170345642 is about 1294.7213250277.

The spelling of 2170345642 in words is "two billion, one hundred seventy million, three hundred forty-five thousand, six hundred forty-two".