1873490869 has 2 divisors, whose sum is σ = 1873490870. Its totient is φ = 1873490868.

The previous prime is 1873490833. The next prime is 1873490881. The reversal of 1873490869 is 9680943781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1692911025 + 180579844 = 41145^2 + 13438^2 .

It is an emirp because it is prime and its reverse (9680943781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1873490869 - 2⁹ = 1873490357 is a prime.

It is a super-2 number, since 2×1873490869² = 7019936072452750322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1873490809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 936745434 + 936745435.

It is an arithmetic number, because the mean of its divisors is an integer number (936745435).

Almost surely, 2^1873490869 is an apocalyptic number.

It is an amenable number.

1873490869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1873490869 is an equidigital number, since it uses as much as digits as its factorization.

1873490869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The square root of 1873490869 is about 43283.8407376240. The cubic root of 1873490869 is about 1232.7751184033.

The spelling of 1873490869 in words is "one billion, eight hundred seventy-three million, four hundred ninety thousand, eight hundred sixty-nine".