161503763 has 2 divisors, whose sum is σ = 161503764. Its totient is φ = 161503762.

The previous prime is 161503753. The next prime is 161503787. The reversal of 161503763 is 367305161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161503763 - 2¹⁴ = 161487379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161503733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80751881 + 80751882.

It is an arithmetic number, because the mean of its divisors is an integer number (80751882).

Almost surely, 2^161503763 is an apocalyptic number.

161503763 is a deficient number, since it is larger than the sum of its proper divisors (1).

161503763 is an equidigital number, since it uses as much as digits as its factorization.

161503763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 161503763 is about 12708.4130795312. The cubic root of 161503763 is about 544.5789897275.

The spelling of 161503763 in words is "one hundred sixty-one million, five hundred three thousand, seven hundred sixty-three".