1395458780 has 48 divisors (see below), whose sum is σ = 3010766976. Its totient is φ = 542968320.

The previous prime is 1395458749. The next prime is 1395458789. The reversal of 1395458780 is 878545931.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395458789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298622 + ... + 303258.

It is an arithmetic number, because the mean of its divisors is an integer number (62724312).

Almost surely, 2^1395458780 is an apocalyptic number.

1395458780 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 1395458780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1505383488).

1395458780 is an abundant number, since it is smaller than the sum of its proper divisors (1615308196).

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

1395458780 is a wasteful number, since it uses less digits than its factorization.

1395458780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5054 (or 5052 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 50.

The square root of 1395458780 is about 37355.8399718170. The cubic root of 1395458780 is about 1117.4780574478.

The spelling of 1395458780 in words is "one billion, three hundred ninety-five million, four hundred fifty-eight thousand, seven hundred eighty".