2687380378 has 4 divisors (see below), whose sum is σ = 4031070570. Its totient is φ = 1343690188.

The previous prime is 2687380373. The next prime is 2687380379. The reversal of 2687380378 is 8730837862.

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., 2687074569 + 305809 = 51837^2 + 553^2 .

It is not an unprimeable number, because it can be changed into a prime (2687380373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671845093 + ... + 671845096.

Almost surely, 2^2687380378 is an apocalyptic number.

2687380378 is a deficient number, since it is larger than the sum of its proper divisors (1343690192).

2687380378 is a wasteful number, since it uses less digits than its factorization.

2687380378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343690191.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The square root of 2687380378 is about 51839.9496334632. The cubic root of 2687380378 is about 1390.3038133068.

The spelling of 2687380378 in words is "two billion, six hundred eighty-seven million, three hundred eighty thousand, three hundred seventy-eight".