1151978407 has 2 divisors, whose sum is σ = 1151978408. Its totient is φ = 1151978406.

The previous prime is 1151978389. The next prime is 1151978419. The reversal of 1151978407 is 7048791511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1151978407 - 2⁷ = 1151978279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1151972407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575989203 + 575989204.

It is an arithmetic number, because the mean of its divisors is an integer number (575989204).

Almost surely, 2^1151978407 is an apocalyptic number.

1151978407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151978407 is an equidigital number, since it uses as much as digits as its factorization.

1151978407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 43.

The square root of 1151978407 is about 33940.8074005319. The cubic root of 1151978407 is about 1048.2900079124.

The spelling of 1151978407 in words is "one billion, one hundred fifty-one million, nine hundred seventy-eight thousand, four hundred seven".