1172016541 has 2 divisors, whose sum is σ = 1172016542. Its totient is φ = 1172016540.

The previous prime is 1172016511. The next prime is 1172016583. The reversal of 1172016541 is 1456102711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1098657316 + 73359225 = 33146^2 + 8565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1172016541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1172016511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586008270 + 586008271.

It is an arithmetic number, because the mean of its divisors is an integer number (586008271).

Almost surely, 2^1172016541 is an apocalyptic number.

It is an amenable number.

1172016541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1172016541 is an equidigital number, since it uses as much as digits as its factorization.

1172016541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1172016541 is about 34234.7271202795. The cubic root of 1172016541 is about 1054.3332762483. Note that the first 3 decimals are identical.

The spelling of 1172016541 in words is "one billion, one hundred seventy-two million, sixteen thousand, five hundred forty-one".