1940743590 has 16 divisors (see below), whose sum is σ = 4657784688. Its totient is φ = 517531616.

The previous prime is 1940743529. The next prime is 1940743591. The reversal of 1940743590 is 953470491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940743591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32345697 + ... + 32345756.

It is an arithmetic number, because the mean of its divisors is an integer number (291111543).

Almost surely, 2^1940743590 is an apocalyptic number.

1940743590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1940743590 is an abundant number, since it is smaller than the sum of its proper divisors (2717041098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1940743590 is a wasteful number, since it uses less digits than its factorization.

1940743590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64691463.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 1940743590 is about 44053.8714530290. The cubic root of 1940743590 is about 1247.3530313353.

The spelling of 1940743590 in words is "one billion, nine hundred forty million, seven hundred forty-three thousand, five hundred ninety".