1027173649 has 16 divisors (see below), whose sum is σ = 1120161600. Its totient is φ = 938177856.

The previous prime is 1027173647. The next prime is 1027173661. The reversal of 1027173649 is 9463717201.

It is a cyclic number.

It is not a de Polignac number, because 1027173649 - 2¹ = 1027173647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1027173647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706207 + ... + 707659.

It is an arithmetic number, because the mean of its divisors is an integer number (70010100).

Almost surely, 2^1027173649 is an apocalyptic number.

1027173649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1027173649 is a deficient number, since it is larger than the sum of its proper divisors (92987951).

1027173649 is a wasteful number, since it uses less digits than its factorization.

1027173649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 1027173649 is about 32049.5499032358. The cubic root of 1027173649 is about 1008.9770543491.

The spelling of 1027173649 in words is "one billion, twenty-seven million, one hundred seventy-three thousand, six hundred forty-nine".