916215803 has 2 divisors, whose sum is σ = 916215804. Its totient is φ = 916215802.

The previous prime is 916215767. The next prime is 916215809. The reversal of 916215803 is 308512619.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 916215803 - 2²⁸ = 647780347 is a prime.

It is not a weakly prime, because it can be changed into another prime (916215809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458107901 + 458107902.

It is an arithmetic number, because the mean of its divisors is an integer number (458107902).

Almost surely, 2^916215803 is an apocalyptic number.

916215803 is a deficient number, since it is larger than the sum of its proper divisors (1).

916215803 is an equidigital number, since it uses as much as digits as its factorization.

916215803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 916215803 is about 30269.0568567968. The cubic root of 916215803 is about 971.2534908860.

The spelling of 916215803 in words is "nine hundred sixteen million, two hundred fifteen thousand, eight hundred three".