1940066355 has 16 divisors (see below), whose sum is σ = 3104732160. Its totient is φ = 1034493408.

The previous prime is 1940066341. The next prime is 1940066357. The reversal of 1940066355 is 5536600491.

It is not a de Polignac number, because 1940066355 - 2⁶ = 1940066291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1940066357) 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, 90174 + ... + 109596.

It is an arithmetic number, because the mean of its divisors is an integer number (194045760).

Almost surely, 2^1940066355 is an apocalyptic number.

1940066355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1940066355 is a deficient number, since it is larger than the sum of its proper divisors (1164665805).

1940066355 is a wasteful number, since it uses less digits than its factorization.

1940066355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26090.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 1940066355 is about 44046.1843409846. The cubic root of 1940066355 is about 1247.2079238253.

The spelling of 1940066355 in words is "one billion, nine hundred forty million, sixty-six thousand, three hundred fifty-five".