1541666672 has 120 divisors (see below), whose sum is σ = 3746903040. Its totient is φ = 601585920.

The previous prime is 1541666657. The next prime is 1541666699. The reversal of 1541666672 is 2766661451.

It is a super-2 number, since 2×1541666672² = 4753472255111111168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1494797 + ... + 1495827.

It is an arithmetic number, because the mean of its divisors is an integer number (31224192).

Almost surely, 2^1541666672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1541666672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1873451520).

1541666672 is an abundant number, since it is smaller than the sum of its proper divisors (2205236368).

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

1541666672 is a wasteful number, since it uses less digits than its factorization.

1541666672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151 (or 1132 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 1541666672 is about 39264.0633658820. The cubic root of 1541666672 is about 1155.2167960703.

The spelling of 1541666672 in words is "one billion, five hundred forty-one million, six hundred sixty-six thousand, six hundred seventy-two".