134563978 has 4 divisors (see below), whose sum is σ = 201845970. Its totient is φ = 67281988.

The previous prime is 134563967. The next prime is 134563981. The reversal of 134563978 is 879365431.

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., 93257649 + 41306329 = 9657^2 + 6427^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33640993 + ... + 33640996.

Almost surely, 2^134563978 is an apocalyptic number.

134563978 is a deficient number, since it is larger than the sum of its proper divisors (67281992).

134563978 is an equidigital number, since it uses as much as digits as its factorization.

134563978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67281991.

The product of its digits is 544320, while the sum is 46.

The square root of 134563978 is about 11600.1714642500. The cubic root of 134563978 is about 512.4399015786.

The spelling of 134563978 in words is "one hundred thirty-four million, five hundred sixty-three thousand, nine hundred seventy-eight".