1371397838 has 4 divisors (see below), whose sum is σ = 2057096760. Its totient is φ = 685698918.

The previous prime is 1371397831. The next prime is 1371397847. The reversal of 1371397838 is 8387931731.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371397831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342849458 + ... + 342849461.

It is an arithmetic number, because the mean of its divisors is an integer number (514274190).

Almost surely, 2^1371397838 is an apocalyptic number.

1371397838 is a deficient number, since it is larger than the sum of its proper divisors (685698922).

1371397838 is an equidigital number, since it uses as much as digits as its factorization.

1371397838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685698921.

The product of its digits is 762048, while the sum is 50.

The square root of 1371397838 is about 37032.3890398662. The cubic root of 1371397838 is about 1111.0181492232.

The spelling of 1371397838 in words is "one billion, three hundred seventy-one million, three hundred ninety-seven thousand, eight hundred thirty-eight".