13778191034 has 4 divisors (see below), whose sum is σ = 20667286554. Its totient is φ = 6889095516.

The previous prime is 13778190989. The next prime is 13778191067. The reversal of 13778191034 is 43019187731.

It is a happy number.

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., 11771599009 + 2006592025 = 108497^2 + 44795^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3444547757 + ... + 3444547760.

Almost surely, 2^13778191034 is an apocalyptic number.

13778191034 is a deficient number, since it is larger than the sum of its proper divisors (6889095520).

13778191034 is an equidigital number, since it uses as much as digits as its factorization.

13778191034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6889095519.

The product of its (nonzero) digits is 127008, while the sum is 44.

The spelling of 13778191034 in words is "thirteen billion, seven hundred seventy-eight million, one hundred ninety-one thousand, thirty-four".