3972726154 has 4 divisors (see below), whose sum is σ = 5959089234. Its totient is φ = 1986363076.

The previous prime is 3972726143. The next prime is 3972726217. The reversal of 3972726154 is 4516272793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3909125529 + 63600625 = 62523^2 + 7975^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 993181537 + ... + 993181540.

Almost surely, 2^3972726154 is an apocalyptic number.

3972726154 is a deficient number, since it is larger than the sum of its proper divisors (1986363080).

3972726154 is a wasteful number, since it uses less digits than its factorization.

3972726154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986363079.

The product of its digits is 635040, while the sum is 46.

The square root of 3972726154 is about 63029.5657132429. The cubic root of 3972726154 is about 1583.7849430533.

The spelling of 3972726154 in words is "three billion, nine hundred seventy-two million, seven hundred twenty-six thousand, one hundred fifty-four".