3735129981 has 8 divisors (see below), whose sum is σ = 5432916384. Its totient is φ = 2263715120.

The previous prime is 3735129977. The next prime is 3735129989. The reversal of 3735129981 is 1899215373.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3735129981 - 2² = 3735129977 is a prime.

It is a super-2 number, since 2×3735129981² = 27902391949930120722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3735129981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3735129989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56592846 + ... + 56592911.

It is an arithmetic number, because the mean of its divisors is an integer number (679114548).

Almost surely, 2^3735129981 is an apocalyptic number.

It is an amenable number.

3735129981 is a deficient number, since it is larger than the sum of its proper divisors (1697786403).

3735129981 is a wasteful number, since it uses less digits than its factorization.

3735129981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113185771.

The product of its digits is 408240, while the sum is 48.

The square root of 3735129981 is about 61115.7097725290. The cubic root of 3735129981 is about 1551.5599945948.

The spelling of 3735129981 in words is "three billion, seven hundred thirty-five million, one hundred twenty-nine thousand, nine hundred eighty-one".