1771231396 has 27 divisors (see below), whose sum is σ = 3408840673. Its totient is φ = 804684320.

The previous prime is 1771231393. The next prime is 1771231417. The reversal of 1771231396 is 6931321771.

The square root of 1771231396 is 42086.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1542132900 + 229098496 = 39270^2 + 15136^2 .

It is a super-2 number, since 2×1771231396² = 6274521316352217632, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1771231393) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 924936 + ... + 926848.

Almost surely, 2^1771231396 is an apocalyptic number.

1771231396 is the 42086-th square number.

It is an amenable number.

1771231396 is a deficient number, since it is larger than the sum of its proper divisors (1637609277).

1771231396 is an equidigital number, since it uses as much as digits as its factorization.

1771231396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3852 (or 1926 counting only the distinct ones).

The product of its digits is 47628, while the sum is 40.

The cubic root of 1771231396 is about 1209.9249540233.

The spelling of 1771231396 in words is "one billion, seven hundred seventy-one million, two hundred thirty-one thousand, three hundred ninety-six".