3861431402 has 4 divisors (see below), whose sum is σ = 5792147106. Its totient is φ = 1930715700.

The previous prime is 3861431297. The next prime is 3861431437. The reversal of 3861431402 is 2041341683.

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., 2886805441 + 974625961 = 53729^2 + 31219^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 965357849 + ... + 965357852.

Almost surely, 2^3861431402 is an apocalyptic number.

3861431402 is a deficient number, since it is larger than the sum of its proper divisors (1930715704).

3861431402 is a wasteful number, since it uses less digits than its factorization.

3861431402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930715703.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 3861431402 is about 62140.4168154672. The cubic root of 3861431402 is about 1568.8548862492.

The spelling of 3861431402 in words is "three billion, eight hundred sixty-one million, four hundred thirty-one thousand, four hundred two".