1227746493 has 6 divisors (see below), whose sum is σ = 1773411614. Its totient is φ = 818497656.

The previous prime is 1227746491. The next prime is 1227746519. The reversal of 1227746493 is 3946477221.

It can be written as a sum of positive squares in only one way, i.e., 1111688964 + 116057529 = 33342^2 + 10773^2 .

It is not a de Polignac number, because 1227746493 - 2¹ = 1227746491 is a prime.

It is a super-2 number, since 2×1227746493² = 3014722902147598098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227746491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68208130 + ... + 68208147.

Almost surely, 2^1227746493 is an apocalyptic number.

It is an amenable number.

1227746493 is a deficient number, since it is larger than the sum of its proper divisors (545665121).

1227746493 is a wasteful number, since it uses less digits than its factorization.

1227746493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136416283 (or 136416280 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 1227746493 is about 35039.2136469984. The cubic root of 1227746493 is about 1070.7865335241.

The spelling of 1227746493 in words is "one billion, two hundred twenty-seven million, seven hundred forty-six thousand, four hundred ninety-three".