1671425748 has 18 divisors (see below), whose sum is σ = 4224992954. Its totient is φ = 557141904.

The previous prime is 1671425747. The next prime is 1671425761. The reversal of 1671425748 is 8475241761.

1671425748 is a `hidden beast` number, since 1 + 6 + 71 + 4 + 2 + 574 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1475481744 + 195944004 = 38412^2 + 13998^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671425747) 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, 23214211 + ... + 23214282.

Almost surely, 2^1671425748 is an apocalyptic number.

1671425748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1671425748 is an abundant number, since it is smaller than the sum of its proper divisors (2553567206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1671425748 is a wasteful number, since it uses less digits than its factorization.

1671425748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46428503 (or 46428498 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 1671425748 is about 40883.0741016377. The cubic root of 1671425748 is about 1186.7585320386.

The spelling of 1671425748 in words is "one billion, six hundred seventy-one million, four hundred twenty-five thousand, seven hundred forty-eight".