1210011993 has 8 divisors (see below), whose sum is σ = 1792610400. Its totient is φ = 806674644.

The previous prime is 1210011983. The next prime is 1210012003. The reversal of 1210011993 is 3991100121.

It is an interprime number because it is at equal distance from previous prime (1210011983) and next prime (1210012003).

It is not a de Polignac number, because 1210011993 - 2¹⁷ = 1209880921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 44815259 = 1210011993 / (1 + 2 + 1 + 0 + 0 + 1 + 1 + 9 + 9 + 3).

It is not an unprimeable number, because it can be changed into a prime (1210011973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22407603 + ... + 22407656.

It is an arithmetic number, because the mean of its divisors is an integer number (224076300).

Almost surely, 2^1210011993 is an apocalyptic number.

It is an amenable number.

1210011993 is a deficient number, since it is larger than the sum of its proper divisors (582598407).

1210011993 is an equidigital number, since it uses as much as digits as its factorization.

1210011993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44815268 (or 44815262 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 1210011993 is about 34785.2266486795. The cubic root of 1210011993 is about 1065.6057573521.

The spelling of 1210011993 in words is "one billion, two hundred ten million, eleven thousand, nine hundred ninety-three".