469166091849 has 135 divisors (see below), whose sum is σ = 858466182483. Its totient is φ = 246189984768.

The previous prime is 469166091847. The next prime is 469166091853. The reversal of 469166091849 is 948190661964.

The square root of 469166091849 is 684957.

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

469166091849 is a `hidden beast` number, since 4 + 6 + 9 + 1 + 6 + 609 + 18 + 4 + 9 = 666.

It can be written as a sum of positive squares in 7 ways, for example, as 436610385225 + 32555706624 = 660765^2 + 180432^2 .

It is not a de Polignac number, because 469166091849 - 2¹ = 469166091847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (469166091847) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 2430912297 + ... + 2430912489.

Almost surely, 2^469166091849 is an apocalyptic number.

469166091849 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

469166091849 is the 684957-th square number.

469166091849 is the 342479-th centered octagonal number.

It is an amenable number.

469166091849 is a deficient number, since it is larger than the sum of its proper divisors (389300090634).

469166091849 is an frugal number, since it uses more digits than its factorization.

469166091849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 63.

The spelling of 469166091849 in words is "four hundred sixty-nine billion, one hundred sixty-six million, ninety-one thousand, eight hundred forty-nine".