1825437730 has 64 divisors (see below), whose sum is σ = 3676959360. Its totient is φ = 648428544.

The previous prime is 1825437727. The next prime is 1825437739. The reversal of 1825437730 is 377345281.

It is a happy number.

It is a super-2 number, since 2×1825437730² = 6664445812215105800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1825437739) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 913092 + ... + 915088.

It is an arithmetic number, because the mean of its divisors is an integer number (57452490).

Almost surely, 2^1825437730 is an apocalyptic number.

1825437730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1825437730 is an abundant number, since it is smaller than the sum of its proper divisors (1851521630).

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

1825437730 is a wasteful number, since it uses less digits than its factorization.

1825437730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 1825437730 is about 42725.1416615557. The cubic root of 1825437730 is about 1222.1438900425.

The spelling of 1825437730 in words is "one billion, eight hundred twenty-five million, four hundred thirty-seven thousand, seven hundred thirty".