1862780040 has 96 divisors (see below), whose sum is σ = 6604416000. Its totient is φ = 451582080.

The previous prime is 1862780033. The next prime is 1862780041. The reversal of 1862780040 is 400872681.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1862779977 and 1862780004.

It is not an unprimeable number, because it can be changed into a prime (1862780041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231240 + ... + 239159.

It is an arithmetic number, because the mean of its divisors is an integer number (68796000).

Almost surely, 2^1862780040 is an apocalyptic number.

1862780040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1862780040 is an abundant number, since it is smaller than the sum of its proper divisors (4741635960).

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

1862780040 is a wasteful number, since it uses less digits than its factorization.

1862780040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470427 (or 470420 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 1862780040 is about 43159.9355884598. The cubic root of 1862780040 is about 1230.4213507867.

The spelling of 1862780040 in words is "one billion, eight hundred sixty-two million, seven hundred eighty thousand, forty".