1397850900 has 144 divisors (see below), whose sum is σ = 4293058560. Its totient is φ = 350179200.

The previous prime is 1397850887. The next prime is 1397850901. The reversal of 1397850900 is 90587931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397850901) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 722935 + ... + 724865.

Almost surely, 2^1397850900 is an apocalyptic number.

1397850900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1397850900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2146529280).

1397850900 is an abundant number, since it is smaller than the sum of its proper divisors (2895207660).

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

1397850900 is a wasteful number, since it uses less digits than its factorization.

1397850900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094 (or 2087 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 1397850900 is about 37387.8442812634. The cubic root of 1397850900 is about 1118.1162264507.

The spelling of 1397850900 in words is "one billion, three hundred ninety-seven million, eight hundred fifty thousand, nine hundred".