1873197949 has 16 divisors (see below), whose sum is σ = 2210009472. Its totient is φ = 1554352128.

The previous prime is 1873197913. The next prime is 1873197959. The reversal of 1873197949 is 9497913781.

It is not a de Polignac number, because 1873197949 - 2¹¹ = 1873195901 is a prime.

It is a super-2 number, since 2×1873197949² = 7017741112275613202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1873197893 and 1873197902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1873197959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6477 + ... + 61549.

It is an arithmetic number, because the mean of its divisors is an integer number (138125592).

Almost surely, 2^1873197949 is an apocalyptic number.

It is an amenable number.

1873197949 is a deficient number, since it is larger than the sum of its proper divisors (336811523).

1873197949 is a wasteful number, since it uses less digits than its factorization.

1873197949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55236.

The product of its digits is 3429216, while the sum is 58.

The square root of 1873197949 is about 43280.4568945384. The cubic root of 1873197949 is about 1232.7108669899.

The spelling of 1873197949 in words is "one billion, eight hundred seventy-three million, one hundred ninety-seven thousand, nine hundred forty-nine".