1302011990 has 64 divisors (see below), whose sum is σ = 2451072960. Its totient is φ = 497602560.

The previous prime is 1302011989. The next prime is 1302012029. The reversal of 1302011990 is 991102031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7273721 + ... + 7273899.

It is an arithmetic number, because the mean of its divisors is an integer number (38298015).

Almost surely, 2^1302011990 is an apocalyptic number.

1302011990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1302011990 is a deficient number, since it is larger than the sum of its proper divisors (1149060970).

1302011990 is a wasteful number, since it uses less digits than its factorization.

1302011990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 1302011990 is about 36083.4032485851. The cubic root of 1302011990 is about 1091.9556368306.

The spelling of 1302011990 in words is "one billion, three hundred two million, eleven thousand, nine hundred ninety".