1051394890 has 32 divisors (see below), whose sum is σ = 2329246080. Its totient is φ = 332748864.

The previous prime is 1051394881. The next prime is 1051394899. The reversal of 1051394890 is 984931501.

1051394890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1051394881) and next prime (1051394899).

It is a super-2 number, since 2×1051394890² = 2210862429436224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051394899) 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, 576780 + ... + 578599.

It is an arithmetic number, because the mean of its divisors is an integer number (72788940).

Almost surely, 2^1051394890 is an apocalyptic number.

1051394890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1051394890 is an abundant number, since it is smaller than the sum of its proper divisors (1277851190).

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

1051394890 is a wasteful number, since it uses less digits than its factorization.

1051394890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155406.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 1051394890 is about 32425.2199684135. The cubic root of 1051394890 is about 1016.8462405485.

The spelling of 1051394890 in words is "one billion, fifty-one million, three hundred ninety-four thousand, eight hundred ninety".