3721201478 has 4 divisors (see below), whose sum is σ = 5581802220. Its totient is φ = 1860600738.

The previous prime is 3721201469. The next prime is 3721201489. The reversal of 3721201478 is 8741021273.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8741021273 = 2777 ⋅3147649.

It is a super-3 number, since 3×3721201478³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 930300368 + ... + 930300371.

It is an arithmetic number, because the mean of its divisors is an integer number (1395450555).

Almost surely, 2^3721201478 is an apocalyptic number.

3721201478 is a deficient number, since it is larger than the sum of its proper divisors (1860600742).

3721201478 is a wasteful number, since it uses less digits than its factorization.

3721201478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860600741.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 3721201478 is about 61001.6514366619. The cubic root of 3721201478 is about 1549.6289750863.

The spelling of 3721201478 in words is "three billion, seven hundred twenty-one million, two hundred one thousand, four hundred seventy-eight".