1078696919 has 2 divisors, whose sum is σ = 1078696920. Its totient is φ = 1078696918.

The previous prime is 1078696909. The next prime is 1078696951. The reversal of 1078696919 is 9196968701.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1078696919 is a prime.

It is a super-2 number, since 2×1078696919² = 2327174086120185122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1078696909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539348459 + 539348460.

It is an arithmetic number, because the mean of its divisors is an integer number (539348460).

Almost surely, 2^1078696919 is an apocalyptic number.

1078696919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078696919 is an equidigital number, since it uses as much as digits as its factorization.

1078696919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 56.

The square root of 1078696919 is about 32843.5217204246. The cubic root of 1078696919 is about 1025.5727654259.

The spelling of 1078696919 in words is "one billion, seventy-eight million, six hundred ninety-six thousand, nine hundred nineteen".