1051273989 has 12 divisors (see below), whose sum is σ = 1555544172. Its totient is φ = 683755200.

The previous prime is 1051273987. The next prime is 1051273991. The reversal of 1051273989 is 9893721501.

1051273989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1051273987) and next prime (1051273991).

It can be written as a sum of positive squares in 2 ways, for example, as 324540225 + 726733764 = 18015^2 + 26958^2 .

It is not a de Polignac number, because 1051273989 - 2¹ = 1051273987 is a prime.

It is a super-2 number, since 2×1051273989² = 2210353999895944242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051273987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1424122 + ... + 1424859.

It is an arithmetic number, because the mean of its divisors is an integer number (129628681).

Almost surely, 2^1051273989 is an apocalyptic number.

It is an amenable number.

1051273989 is a deficient number, since it is larger than the sum of its proper divisors (504270183).

1051273989 is a wasteful number, since it uses less digits than its factorization.

1051273989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849028 (or 2849025 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 1051273989 is about 32423.3556098070. The cubic root of 1051273989 is about 1016.8072629829.

The spelling of 1051273989 in words is "one billion, fifty-one million, two hundred seventy-three thousand, nine hundred eighty-nine".