1866199034 has 32 divisors (see below), whose sum is σ = 3230668800. Its totient is φ = 791967600.

The previous prime is 1866199033. The next prime is 1866199043. The reversal of 1866199034 is 4309916681.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1866199034.

It is not an unprimeable number, because it can be changed into a prime (1866199031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 757697 + ... + 760155.

It is an arithmetic number, because the mean of its divisors is an integer number (100958400).

Almost surely, 2^1866199034 is an apocalyptic number.

1866199034 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1866199034 is a deficient number, since it is larger than the sum of its proper divisors (1364469766).

1866199034 is a wasteful number, since it uses less digits than its factorization.

1866199034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 1866199034 is about 43199.5258538795. The cubic root of 1866199034 is about 1231.1736729412.

The spelling of 1866199034 in words is "one billion, eight hundred sixty-six million, one hundred ninety-nine thousand, thirty-four".