1391620230 has 512 divisors, whose sum is σ = 5264179200. Its totient is φ = 251942400.

The previous prime is 1391620229. The next prime is 1391620253. The reversal of 1391620230 is 320261931.

1391620230 is a `hidden beast` number, since 1 + 3 + 9 + 1 + 620 + 2 + 30 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1391620194 and 1391620203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 5134995 + ... + 5135265.

It is an arithmetic number, because the mean of its divisors is an integer number (10281600).

Almost surely, 2^1391620230 is an apocalyptic number.

1391620230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1391620230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2632089600).

1391620230 is an abundant number, since it is smaller than the sum of its proper divisors (3872558970).

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

1391620230 is a wasteful number, since it uses less digits than its factorization.

1391620230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 1391620230 is about 37304.4264129607. The cubic root of 1391620230 is about 1116.4524844530.

The spelling of 1391620230 in words is "one billion, three hundred ninety-one million, six hundred twenty thousand, two hundred thirty".