1121173770 has 16 divisors (see below), whose sum is σ = 2690817120. Its totient is φ = 298979664.

The previous prime is 1121173769. The next prime is 1121173771. The reversal of 1121173770 is 773711211.

It is an interprime number because it is at equal distance from previous prime (1121173769) and next prime (1121173771).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 37372459 = 1121173770 / (1 + 1 + 2 + 1 + 1 + 7 + 3 + 7 + 7 + 0).

It is not an unprimeable number, because it can be changed into a prime (1121173771) 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, 18686200 + ... + 18686259.

It is an arithmetic number, because the mean of its divisors is an integer number (168176070).

Almost surely, 2^1121173770 is an apocalyptic number.

1121173770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121173770 is an abundant number, since it is smaller than the sum of its proper divisors (1569643350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121173770 is a wasteful number, since it uses less digits than its factorization.

1121173770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37372469.

The product of its (nonzero) digits is 2058, while the sum is 30.

The square root of 1121173770 is about 33483.9330127152. The cubic root of 1121173770 is about 1038.8614790552.

Adding to 1121173770 its reverse (773711211), we get a palindrome (1894884981).

The spelling of 1121173770 in words is "one billion, one hundred twenty-one million, one hundred seventy-three thousand, seven hundred seventy".