1798547461 has 2 divisors, whose sum is σ = 1798547462. Its totient is φ = 1798547460.

The previous prime is 1798547431. The next prime is 1798547477. The reversal of 1798547461 is 1647458971.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1757202561 + 41344900 = 41919^2 + 6430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1798547461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1798547399 and 1798547408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1798547411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899273730 + 899273731.

It is an arithmetic number, because the mean of its divisors is an integer number (899273731).

Almost surely, 2^1798547461 is an apocalyptic number.

It is an amenable number.

1798547461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1798547461 is an equidigital number, since it uses as much as digits as its factorization.

1798547461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 52.

The square root of 1798547461 is about 42409.2850800388. The cubic root of 1798547461 is about 1216.1131023337.

The spelling of 1798547461 in words is "one billion, seven hundred ninety-eight million, five hundred forty-seven thousand, four hundred sixty-one".