1380673834 has 4 divisors (see below), whose sum is σ = 2071010754. Its totient is φ = 690336916.

The previous prime is 1380673829. The next prime is 1380673837. The reversal of 1380673834 is 4383760831.

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., 882268209 + 498405625 = 29703^2 + 22325^2 .

It is a super-3 number, since 3×1380673834³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1380673837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345168457 + ... + 345168460.

Almost surely, 2^1380673834 is an apocalyptic number.

1380673834 is a deficient number, since it is larger than the sum of its proper divisors (690336920).

1380673834 is an equidigital number, since it uses as much as digits as its factorization.

1380673834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690336919.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 1380673834 is about 37157.4196359220. The cubic root of 1380673834 is about 1113.5174606921.

The spelling of 1380673834 in words is "one billion, three hundred eighty million, six hundred seventy-three thousand, eight hundred thirty-four".