1395212738 has 4 divisors (see below), whose sum is σ = 2092819110. Its totient is φ = 697606368.

The previous prime is 1395212603. The next prime is 1395212743. The reversal of 1395212738 is 8372125931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1338315889 + 56896849 = 36583^2 + 7543^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1395212695 and 1395212704.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348803183 + ... + 348803186.

Almost surely, 2^1395212738 is an apocalyptic number.

1395212738 is a deficient number, since it is larger than the sum of its proper divisors (697606372).

1395212738 is an equidigital number, since it uses as much as digits as its factorization.

1395212738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697606371.

The product of its digits is 90720, while the sum is 41.

The square root of 1395212738 is about 37352.5466066238. The cubic root of 1395212738 is about 1117.4123770897.

The spelling of 1395212738 in words is "one billion, three hundred ninety-five million, two hundred twelve thousand, seven hundred thirty-eight".