1046638331 has 4 divisors (see below), whose sum is σ = 1047664464. Its totient is φ = 1045612200.

The previous prime is 1046638319. The next prime is 1046638357. The reversal of 1046638331 is 1338366401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1338366401 = 71 ⋅18850231.

It is a cyclic number.

It is not a de Polignac number, because 1046638331 - 2⁶ = 1046638267 is a prime.

It is a super-2 number, since 2×1046638331² = 2190903591836931122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1046638291 and 1046638300.

It is not an unprimeable number, because it can be changed into a prime (1046638301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511535 + ... + 513576.

It is an arithmetic number, because the mean of its divisors is an integer number (261916116).

Almost surely, 2^1046638331 is an apocalyptic number.

1046638331 is a deficient number, since it is larger than the sum of its proper divisors (1026133).

1046638331 is a wasteful number, since it uses less digits than its factorization.

1046638331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026132.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 1046638331 is about 32351.7902286720. The cubic root of 1046638331 is about 1015.3105025265.

The spelling of 1046638331 in words is "one billion, forty-six million, six hundred thirty-eight thousand, three hundred thirty-one".