1045631000 has 64 divisors (see below), whose sum is σ = 2503781280. Its totient is φ = 408508800.

The previous prime is 1045630979. The next prime is 1045631003. The reversal of 1045631000 is 1365401.

It is a super-2 number, since 2×1045631000² = 2186688376322000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045631003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30842 + ... + 55158.

Almost surely, 2^1045631000 is an apocalyptic number.

1045631000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1045631000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251890640).

1045631000 is an abundant number, since it is smaller than the sum of its proper divisors (1458150280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1045631000 is a wasteful number, since it uses less digits than its factorization.

1045631000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24381 (or 24367 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1045631000 is about 32336.2180843710. The cubic root of 1045631000 is about 1014.9846714017.

Adding to 1045631000 its reverse (1365401), we get a palindrome (1046996401).

The spelling of 1045631000 in words is "one billion, forty-five million, six hundred thirty-one thousand".