361983993 has 16 divisors (see below), whose sum is σ = 569389056. Its totient is φ = 200175120.

The previous prime is 361983983. The next prime is 361983997. The reversal of 361983993 is 399389163.

It is not a de Polignac number, because 361983993 - 2¹⁴ = 361967609 is a prime.

It is a super-2 number, since 2×361983993² = 262064822376448098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (361983997) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 277371 + ... + 278672.

It is an arithmetic number, because the mean of its divisors is an integer number (35586816).

Almost surely, 2^361983993 is an apocalyptic number.

It is an amenable number.

361983993 is a deficient number, since it is larger than the sum of its proper divisors (207405063).

361983993 is a wasteful number, since it uses less digits than its factorization.

361983993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556084.

The product of its digits is 944784, while the sum is 51.

The square root of 361983993 is about 19025.8769311693. The cubic root of 361983993 is about 712.6830918817.

The spelling of 361983993 in words is "three hundred sixty-one million, nine hundred eighty-three thousand, nine hundred ninety-three".