735378381 has 6 divisors (see below), whose sum is σ = 1062213230. Its totient is φ = 490252248.

The previous prime is 735378377. The next prime is 735378461. The reversal of 735378381 is 183873537.

It can be written as a sum of positive squares in only one way, i.e., 648720900 + 86657481 = 25470^2 + 9309^2 .

It is not a de Polignac number, because 735378381 - 2² = 735378377 is a prime.

It is a super-2 number, since 2×735378381² = 1081562726484362322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (735378341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40854346 + ... + 40854363.

Almost surely, 2^735378381 is an apocalyptic number.

It is an amenable number.

735378381 is a deficient number, since it is larger than the sum of its proper divisors (326834849).

735378381 is a wasteful number, since it uses less digits than its factorization.

735378381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81708715 (or 81708712 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 735378381 is about 27117.8609222778. The cubic root of 735378381 is about 902.6172297797.

It can be divided in two parts, 73537 and 8381, that added together give a palindrome (81918).

The spelling of 735378381 in words is "seven hundred thirty-five million, three hundred seventy-eight thousand, three hundred eighty-one".