1820087925490 has 16 divisors (see below), whose sum is σ = 3418599930048. Its totient is φ = 696381467056.

The previous prime is 1820087925463. The next prime is 1820087925499. The reversal of 1820087925490 is 945297800281.

It is not an unprimeable number, because it can be changed into a prime (1820087925499) 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, 3956712652 + ... + 3956713111.

It is an arithmetic number, because the mean of its divisors is an integer number (213662495628).

Almost surely, 2^{1820087925490} is an apocalyptic number.

1820087925490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1820087925490 is a deficient number, since it is larger than the sum of its proper divisors (1598512004558).

1820087925490 is a wasteful number, since it uses less digits than its factorization.

1820087925490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7913425793.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 1820087925490 in words is "one trillion, eight hundred twenty billion, eighty-seven million, nine hundred twenty-five thousand, four hundred ninety".