3754274640 has 40 divisors (see below), whose sum is σ = 11638252128. Its totient is φ = 1001139840.

The previous prime is 3754274627. The next prime is 3754274647. The reversal of 3754274640 is 464724573.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 3754274592 and 3754274601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3754274647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7821166 + ... + 7821645.

Almost surely, 2^3754274640 is an apocalyptic number.

3754274640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3754274640 is an abundant number, since it is smaller than the sum of its proper divisors (7883977488).

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

3754274640 is a wasteful number, since it uses less digits than its factorization.

3754274640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15642827 (or 15642821 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 42.

The square root of 3754274640 is about 61272.1359183765. The cubic root of 3754274640 is about 1554.2063532749.

The spelling of 3754274640 in words is "three billion, seven hundred fifty-four million, two hundred seventy-four thousand, six hundred forty".