1853145404 has 24 divisors (see below), whose sum is σ = 3651949056. Its totient is φ = 815166000.

The previous prime is 1853145383. The next prime is 1853145461. The reversal of 1853145404 is 4045413581.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 677942 + ... + 680669.

It is an arithmetic number, because the mean of its divisors is an integer number (152164544).

Almost surely, 2^1853145404 is an apocalyptic number.

It is an amenable number.

1853145404 is a deficient number, since it is larger than the sum of its proper divisors (1798803652).

1853145404 is a wasteful number, since it uses less digits than its factorization.

1853145404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358657 (or 1358655 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 1853145404 is about 43048.1753852588. The cubic root of 1853145404 is about 1228.2963622086.

Adding to 1853145404 its reverse (4045413581), we get a palindrome (5898558985).

The spelling of 1853145404 in words is "one billion, eight hundred fifty-three million, one hundred forty-five thousand, four hundred four".