1314736978 has 4 divisors (see below), whose sum is σ = 1972105470. Its totient is φ = 657368488.

The previous prime is 1314736967. The next prime is 1314736979. The reversal of 1314736978 is 8796374131.

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., 736959609 + 577777369 = 27147^2 + 24037^2 .

It is not an unprimeable number, because it can be changed into a prime (1314736979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328684243 + ... + 328684246.

Almost surely, 2^1314736978 is an apocalyptic number.

1314736978 is a deficient number, since it is larger than the sum of its proper divisors (657368492).

1314736978 is an equidigital number, since it uses as much as digits as its factorization.

1314736978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657368491.

The product of its digits is 762048, while the sum is 49.

The square root of 1314736978 is about 36259.3019513614. The cubic root of 1314736978 is about 1095.5014565535.

The spelling of 1314736978 in words is "one billion, three hundred fourteen million, seven hundred thirty-six thousand, nine hundred seventy-eight".