1819140742 has 16 divisors (see below), whose sum is σ = 2837943360. Its totient is φ = 873782208.

The previous prime is 1819140703. The next prime is 1819140773. The reversal of 1819140742 is 2470419181.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

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, 149743 + ... + 161434.

It is an arithmetic number, because the mean of its divisors is an integer number (177371460).

Almost surely, 2^1819140742 is an apocalyptic number.

1819140742 is a deficient number, since it is larger than the sum of its proper divisors (1018802618).

1819140742 is a wasteful number, since it uses less digits than its factorization.

1819140742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311295.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1819140742 is about 42651.3861673920. The cubic root of 1819140742 is about 1220.7369779003.

The spelling of 1819140742 in words is "one billion, eight hundred nineteen million, one hundred forty thousand, seven hundred forty-two".