1973240889 has 16 divisors (see below), whose sum is σ = 2698094784. Its totient is φ = 1282075200.

The previous prime is 1973240887. The next prime is 1973240891. The reversal of 1973240889 is 9880423791.

It is an interprime number because it is at equal distance from previous prime (1973240887) and next prime (1973240891).

It is not a de Polignac number, because 1973240889 - 2¹ = 1973240887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1973240887) 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, 42879 + ... + 76059.

It is an arithmetic number, because the mean of its divisors is an integer number (168630924).

Almost surely, 2^1973240889 is an apocalyptic number.

It is an amenable number.

1973240889 is a deficient number, since it is larger than the sum of its proper divisors (724853895).

1973240889 is a wasteful number, since it uses less digits than its factorization.

1973240889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33688.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 1973240889 is about 44421.1761325609. The cubic root of 1973240889 is about 1254.2767405578.

The spelling of 1973240889 in words is "one billion, nine hundred seventy-three million, two hundred forty thousand, eight hundred eighty-nine".