1380505146 has 16 divisors (see below), whose sum is σ = 2761431744. Its totient is φ = 460098144.

The previous prime is 1380505141. The next prime is 1380505157. The reversal of 1380505146 is 6415050831.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1380505141) 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, 39075 + ... + 65481.

It is an arithmetic number, because the mean of its divisors is an integer number (172589484).

Almost surely, 2^1380505146 is an apocalyptic number.

1380505146 is an abundant number, since it is smaller than the sum of its proper divisors (1380926598).

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

1380505146 is a wasteful number, since it uses less digits than its factorization.

1380505146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35125.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 1380505146 is about 37155.1496565416. The cubic root of 1380505146 is about 1113.4721097243.

Adding to 1380505146 its reverse (6415050831), we get a palindrome (7795555977).

The spelling of 1380505146 in words is "one billion, three hundred eighty million, five hundred five thousand, one hundred forty-six".