1820741004 has 60 divisors (see below), whose sum is σ = 5039778744. Its totient is φ = 571211136.

The previous prime is 1820740981. The next prime is 1820741009. The reversal of 1820741004 is 4001470281.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1820741009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 159774 + ... + 170789.

Almost surely, 2^1820741004 is an apocalyptic number.

It is an amenable number.

1820741004 is an abundant number, since it is smaller than the sum of its proper divisors (3219037740).

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

1820741004 is a wasteful number, since it uses less digits than its factorization.

1820741004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330596 (or 330585 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 1820741004 is about 42670.1418324336. The cubic root of 1820741004 is about 1221.0948256860.

The spelling of 1820741004 in words is "one billion, eight hundred twenty million, seven hundred forty-one thousand, four".