1395889610 has 8 divisors (see below), whose sum is σ = 2512601316. Its totient is φ = 558355840.

The previous prime is 1395889609. The next prime is 1395889661. The reversal of 1395889610 is 169885931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1384807369 + 11082241 = 37213^2 + 3329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69794471 + ... + 69794490.

Almost surely, 2^1395889610 is an apocalyptic number.

1395889610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1395889610 is a deficient number, since it is larger than the sum of its proper divisors (1116711706).

1395889610 is a wasteful number, since it uses less digits than its factorization.

1395889610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139588968.

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 1395889610 is about 37361.6060950276. The cubic root of 1395889610 is about 1117.5930479537.

The spelling of 1395889610 in words is "one billion, three hundred ninety-five million, eight hundred eighty-nine thousand, six hundred ten".