1380395739 has 16 divisors (see below), whose sum is σ = 1850644224. Its totient is φ = 915218400.

The previous prime is 1380395717. The next prime is 1380395743. The reversal of 1380395739 is 9375930831.

It is not a de Polignac number, because 1380395739 - 2¹² = 1380391643 is a prime.

It is a super-2 number, since 2×1380395739² = 3810984792498712242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1380395839) 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, 646704 + ... + 648834.

It is an arithmetic number, because the mean of its divisors is an integer number (115665264).

Almost surely, 2^1380395739 is an apocalyptic number.

1380395739 is a deficient number, since it is larger than the sum of its proper divisors (470248485).

1380395739 is a wasteful number, since it uses less digits than its factorization.

1380395739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3218.

The product of its (nonzero) digits is 612360, while the sum is 48.

The square root of 1380395739 is about 37153.6773280923. The cubic root of 1380395739 is about 1113.4426941967.

The spelling of 1380395739 in words is "one billion, three hundred eighty million, three hundred ninety-five thousand, seven hundred thirty-nine".