1097731801 has 2 divisors, whose sum is σ = 1097731802. Its totient is φ = 1097731800.

The previous prime is 1097731777. The next prime is 1097731807. The reversal of 1097731801 is 1081377901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1003622400 + 94109401 = 31680^2 + 9701^2 .

It is a cyclic number.

It is not a de Polignac number, because 1097731801 - 2⁷ = 1097731673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1097731807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548865900 + 548865901.

It is an arithmetic number, because the mean of its divisors is an integer number (548865901).

Almost surely, 2^1097731801 is an apocalyptic number.

It is an amenable number.

1097731801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097731801 is an equidigital number, since it uses as much as digits as its factorization.

1097731801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 37.

The square root of 1097731801 is about 33132.0358716454. The cubic root of 1097731801 is about 1031.5701070004.

It can be divided in two parts, 10977 and 31801, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 1097731801 in words is "one billion, ninety-seven million, seven hundred thirty-one thousand, eight hundred one".