1340747378 has 8 divisors (see below), whose sum is σ = 2011307760. Its totient is φ = 670311460.

The previous prime is 1340747377. The next prime is 1340747417. The reversal of 1340747378 is 8737470431.

It is a happy number.

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

It is a super-2 number, since 2×1340747378² = 3595207063227749768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1340747371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3533 + ... + 51903.

It is an arithmetic number, because the mean of its divisors is an integer number (251413470).

Almost surely, 2^1340747378 is an apocalyptic number.

1340747378 is a deficient number, since it is larger than the sum of its proper divisors (670560382).

1340747378 is a wasteful number, since it uses less digits than its factorization.

1340747378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62232.

The product of its (nonzero) digits is 395136, while the sum is 44.

The square root of 1340747378 is about 36616.2174179693. The cubic root of 1340747378 is about 1102.6786996842.

The spelling of 1340747378 in words is "one billion, three hundred forty million, seven hundred forty-seven thousand, three hundred seventy-eight".